Question: what are the names of the gangs in the outsiders
[{'answer': 'greasers', 'provenance': [{'wikipedia_id': '562456', 'title': 'The Outsiders (novel)', 'start_paragraph_id': 1, 'start_character': 371, 'end_paragraph_id': 1, 'end_character': 379, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Socs', 'provenance': [{'wikipedia_id': '562456', 'title': 'The Outsiders (novel)', 'start_paragraph_id': 1, 'start_character': 402, 'end_paragraph_id': 1, 'end_character': 406, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '562456', 'title': 'The Outsiders (novel)', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 582, 'bleu_score': 0.9802931511945101, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8152290165459446991}, 'section': 'Section::::Plot summary.\n'}]}]