Add back issue #1140

adam/learner/contrastive_learner.py

@@ -193,6 +193,12 @@ def learn_from(self, matching: LanguagePerceptionSemanticContrast) -> None:
     def _match_concept_pattern_to_multiple_graphs(
         self, concept: Concept, graph: PerceptionGraph
     ) -> Mapping[PerceptionGraphTemplate, Optional[PerceptionGraphPatternMatch]]:
+        # Arbitrarily take the first match per hypothesis.
+        #
+        # Because there may be more than one match per hypothesis, this results in non-deterministic behavior in
+        # general. We would like to do something smarter. See the GitHub issue:
+        # https://github.com/isi-vista/adam/issues/1140
+        # TODO issue
         return {
             apprentice_concept: apprentice_concept.graph_pattern.matcher(
                 graph,