diff --git a/.github/workflows/generate-docs.yml b/.github/workflows/generate-docs.yml
index b8d16ed9..40a1cfce 100644
--- a/.github/workflows/generate-docs.yml
+++ b/.github/workflows/generate-docs.yml
@@ -19,6 +19,8 @@ jobs:
         run: gem install yard --no-document
       - name: Build YARD Ruby Documentation
         run: yardoc
+      - name: Copy etc files
+        run: mkdir -p ./doc/yard/etc && cp ./etc/doap.* ./doc/yard/etc/
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
         with:
diff --git a/VERSION b/VERSION
index 406ebcbd..f092941a 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.2.7
+3.2.8
diff --git a/lib/rdf/model/dataset.rb b/lib/rdf/model/dataset.rb
index 183dd3ba..27ec4d2e 100644
--- a/lib/rdf/model/dataset.rb
+++ b/lib/rdf/model/dataset.rb
@@ -79,7 +79,7 @@ def each
     #
     # @return [String]
     def inspect
-      sprintf("#<%s:%#0x(%s)>", self.class.name, __id__, uri.to_s)
+      sprintf("#<%s:%#0x(%s)>", self.class.name, __id__, count.to_s)
     end
 
     ##
diff --git a/lib/rdf/query.rb b/lib/rdf/query.rb
index 809a4381..a91c0f40 100644
--- a/lib/rdf/query.rb
+++ b/lib/rdf/query.rb
@@ -294,7 +294,7 @@ def optimize!(**options)
     #   Alias for `:graph_name`.
     # @param  [Hash{Symbol => Object}] options
     #   any additional keyword options
-    # @option options [Hash{Symbol => RDF::Term}] bindings
+    # @option options [Hash{Symbol => RDF::Term}, RDF::Query::Solution] bindings
     #   optional variable bindings to use
     # @option options [Boolean] :optimize
     #   Optimize query before execution.
@@ -313,6 +313,7 @@ def execute(queryable, bindings: {}, solutions: Solution.new, graph_name: nil, n
       # Otherwise, a quick empty solution simplifies the logic below; no special case for
       # the first pattern
       @solutions = Query::Solutions(solutions)
+      bindings = bindings.to_h if bindings.is_a?(Solution)
 
       # If there are no patterns, just return the empty solution
       if empty?
@@ -341,7 +342,7 @@ def execute(queryable, bindings: {}, solutions: Solution.new, graph_name: nil, n
         bindings.each_key do |variable|
           if pattern.variables.include?(variable)
             unbound_solutions, old_solutions = old_solutions, Query::Solutions()
-            bindings[variable].each do |binding|
+            Array(bindings[variable]).each do |binding|
               unbound_solutions.each do |solution|
                 old_solutions << solution.merge(variable => binding)
               end
diff --git a/lib/rdf/query/pattern.rb b/lib/rdf/query/pattern.rb
index f6214800..5a9ef841 100644
--- a/lib/rdf/query/pattern.rb
+++ b/lib/rdf/query/pattern.rb
@@ -160,7 +160,7 @@ def eql?(other)
     #
     # @param  [RDF::Queryable] queryable
     #   the graph or repository to query
-    # @param  [Hash{Symbol => RDF::Term}] bindings
+    # @param  [Hash{Symbol => RDF::Term}, RDF::Query::Solution] bindings
     #   optional variable bindings to use
     # @yield  [statement]
     #   each matching statement
@@ -171,6 +171,7 @@ def eql?(other)
     # @see    RDF::Queryable#query
     # @since  0.3.0
     def execute(queryable, bindings = {}, &block)
+      bindings = bindings.to_h if bindings.is_a?(Solution)
       query = {
         subject:    subject.is_a?(Variable)     && bindings[subject.to_sym]     ? bindings[subject.to_sym]    : subject,
         predicate:  predicate.is_a?(Variable)   && bindings[predicate.to_sym]   ? bindings[predicate.to_sym]  : predicate,
diff --git a/spec/query_pattern_spec.rb b/spec/query_pattern_spec.rb
index 6b1f5dae..86564663 100644
--- a/spec/query_pattern_spec.rb
+++ b/spec/query_pattern_spec.rb
@@ -599,10 +599,20 @@
     let!(:statement) {repo.detect {|s| s.to_a.none?(&:node?)}}
     let(:pattern) {described_class.new(:s, :p, :o)}
     subject {pattern}
+
     describe "#execute" do
       it "executes query against repo" do
         expect(subject.execute(repo).to_a.size).to eql repo.count
       end
+
+      it "executes query with hash bindings" do
+        expect(subject.execute(repo, {subject: statement.subject}).to_a.size).to be > 0
+      end
+
+      it "executes query with solution bindings" do
+        soln = RDF::Query::Solution.new(subject: statement.subject)
+        expect(subject.execute(repo, soln).to_a.size).to be > 0
+      end
     end
 
     describe "#solution" do
diff --git a/spec/query_spec.rb b/spec/query_spec.rb
index 4e63284b..bdb31fb3 100644
--- a/spec/query_spec.rb
+++ b/spec/query_spec.rb
@@ -702,6 +702,14 @@
           {o: EX.o1}, {o: EX.o4}]
       end
 
+      it "limits a variable to the initial bindings (solution)" do
+        query = RDF::Query.new do |query|
+          query << [EX.x1, EX.p, :o]
+        end
+        expect(query.execute(graph, bindings: RDF::Query::Solution.new(o: [EX.o1, EX.o4]))).to have_result_set [
+          {o: EX.o1}, {o: EX.o4}]
+      end
+
       it "uses bindings for multiple variables" do
         graph << [EX.x1, EX.p1, EX.o1]
         graph << [EX.x1, EX.p1, EX.o2]
@@ -714,6 +722,19 @@
         ]
       end
 
+      it "uses bindings for multiple variables (solution)" do
+        graph << [EX.x1, EX.p1, EX.o1]
+        graph << [EX.x1, EX.p1, EX.o2]
+        graph << [EX.x2, EX.p1, EX.o1]
+        query = RDF::Query.new do |query|
+          query << [:s, EX.p1, :o]
+        end
+        solution = RDF::Query::Solution.new(o: EX.o1, s: EX.x1)
+        expect(query.execute(graph, bindings: solution)).to have_result_set [
+          {s: EX.x1, o: EX.o1}
+        ]
+      end
+
     end
 
     context "solution modifiers" do