Question: who plays the main emoji in the emoji movie
[{'answer': 'T.J. Miller', 'provenance': [{'wikipedia_id': '48893231', 'title': 'The Emoji Movie', 'start_paragraph_id': 2, 'start_character': 29, 'end_paragraph_id': 2, 'end_character': 40, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '48893231', 'title': 'The Emoji Movie', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 94, 'bleu_score': 0.724157734257582, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11447894030819841269}, 'section': 'Section::::Voice cast.\n'}]}]