Question: who plays gumball on amazing world of gumball
[{'answer': 'Logan Grove', 'provenance': [{'wikipedia_id': '34150110', 'title': 'List of The Amazing World of Gumball characters', 'start_paragraph_id': 4, 'start_character': 56, 'end_paragraph_id': 4, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Main characters.:Gumball Watterson.\n'}]}, {'answer': 'Jacob Hopkins', 'provenance': [{'wikipedia_id': '34150110', 'title': 'List of The Amazing World of Gumball characters', 'start_paragraph_id': 4, 'start_character': 84, 'end_paragraph_id': 4, 'end_character': 97, 'bleu_score': 1.0, 'section': 'Section::::Main characters.:Gumball Watterson.\n'}]}, {'provenance': [{'wikipedia_id': '34150110', 'title': 'List of The Amazing World of Gumball characters', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 769, 'bleu_score': 0.6933129740318831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1568051072874719986}, 'section': 'Section::::Main characters.:Gumball Watterson.\n'}]}]