Question: when was k to 12 implemented in philippines
[{'answer': '2011', 'provenance': [{'wikipedia_id': '7025539', 'title': 'Education in the Philippines', 'start_paragraph_id': 39, 'start_character': 859, 'end_paragraph_id': 39, 'end_character': 863, 'bleu_score': 1.0, 'section': 'Section::::History.:Contemporary period.\n'}]}, {'provenance': [{'wikipedia_id': '7025539', 'title': 'Education in the Philippines', 'start_paragraph_id': 66, 'start_character': 0, 'end_paragraph_id': 66, 'end_character': 234, 'bleu_score': 0.9058137522894321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5981918284560825017}, 'section': 'Section::::Formal education.:K-12.:Implementation.\n'}]}]