Question: when did the first slender game come out
[{'answer': '2012', 'provenance': [{'wikipedia_id': '36639464', 'title': 'Slender Man', 'start_paragraph_id': 15, 'start_character': 3, 'end_paragraph_id': 15, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History.:Early development.\n'}]}, {'provenance': [{'wikipedia_id': '36639464', 'title': 'Slender Man', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 638, 'bleu_score': 0.6109383244680241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 440901105657744182}, 'section': 'Section::::History.:Early development.\n'}]}]