Question: when did lionel messi score his first goal
[{'answer': 'six years old', 'provenance': [{'wikipedia_id': '2150841', 'title': 'Lionel Messi', 'start_paragraph_id': 7, 'start_character': 85, 'end_paragraph_id': 7, 'end_character': 98, 'bleu_score': 1.0, 'section': 'Section::::Early life.\n'}]}, {'provenance': [{'wikipedia_id': '2150841', 'title': 'Lionel Messi', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 882, 'bleu_score': 0.9872197907830691, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8755036105014616352}, 'section': 'Section::::Early life.\n'}]}]