Question: who is the astronaut onboard of freedom 7
[{'answer': 'Alan Shepard', 'provenance': [{'wikipedia_id': '213233', 'title': 'Mercury-Redstone 3', 'start_paragraph_id': 1, 'start_character': 118, 'end_paragraph_id': 1, 'end_character': 130, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '213233', 'title': 'Mercury-Redstone 3', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 445, 'bleu_score': 0.8829018286975181, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17126438333086265503}, 'section': 'Section::::Abstract.'}]}]