Question: when did mcdonald's stop putting cookies in happy meals
[{'answer': 'July 2011', 'provenance': [{'wikipedia_id': '484398', 'title': 'Happy Meal', 'start_paragraph_id': 18, 'start_character': 3, 'end_paragraph_id': 18, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '484398', 'title': 'Happy Meal', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 412, 'bleu_score': 0.9716239638199891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 949869320936070693}, 'section': 'Section::::History.\n'}]}]