Question: who starred in the boy in the bubble
[{'answer': 'John Travolta', 'provenance': [{'wikipedia_id': '2133173', 'title': 'The Boy in the Plastic Bubble', 'start_paragraph_id': 1, 'start_character': 180, 'end_paragraph_id': 1, 'end_character': 193, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Diana Hyland', 'provenance': [{'wikipedia_id': '2133173', 'title': 'The Boy in the Plastic Bubble', 'start_paragraph_id': 1, 'start_character': 213, 'end_paragraph_id': 1, 'end_character': 225, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Robert Reed', 'provenance': [{'wikipedia_id': '2133173', 'title': 'The Boy in the Plastic Bubble', 'start_paragraph_id': 1, 'start_character': 227, 'end_paragraph_id': 1, 'end_character': 238, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Ralph Bellamy', 'provenance': [{'wikipedia_id': '2133173', 'title': 'The Boy in the Plastic Bubble', 'start_paragraph_id': 1, 'start_character': 240, 'end_paragraph_id': 1, 'end_character': 253, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': "Glynnis O'Connor", 'provenance': [{'wikipedia_id': '2133173', 'title': 'The Boy in the Plastic Bubble', 'start_paragraph_id': 1, 'start_character': 195, 'end_paragraph_id': 1, 'end_character': 211, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]