Question: what year did monster high dolls come out
[{'answer': 'July 2010', 'provenance': [{'wikipedia_id': '28193070', 'title': 'Monster High', 'start_paragraph_id': 1, 'start_character': 85, 'end_paragraph_id': 1, 'end_character': 94, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '28193070', 'title': 'Monster High', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 311, 'bleu_score': 0.958740481558872, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7370933829302839659}, 'section': 'Section::::Abstract.'}]}]