Question: name the two forms of polymorphism in cnidarian
[{'answer': 'polyp', 'provenance': [{'wikipedia_id': '6621', 'title': 'Cnidaria', 'start_paragraph_id': 3, 'start_character': 61, 'end_paragraph_id': 3, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'medusa', 'provenance': [{'wikipedia_id': '6621', 'title': 'Cnidaria', 'start_paragraph_id': 3, 'start_character': 41, 'end_paragraph_id': 3, 'end_character': 47, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6621', 'title': 'Cnidaria', 'start_paragraph_id': 27, 'start_character': 0, 'end_paragraph_id': 27, 'end_character': 387, 'bleu_score': 0.6373472372299911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9504228744753604729}, 'section': 'Section::::Description.:Polymorphism.\n'}]}]