Question: who sang the theme song for toy story
[{'answer': 'Randy Newman', 'provenance': [{'wikipedia_id': '4784180', 'title': "You've Got a Friend in Me", 'start_paragraph_id': 1, 'start_character': 41, 'end_paragraph_id': 1, 'end_character': 53, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4784180', 'title': "You've Got a Friend in Me", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 524, 'bleu_score': 0.8044772044229611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10101144956844344292}, 'section': 'Section::::Abstract.'}]}]