Question: who did tom hanks work for in castaway
[{'answer': 'FedEx', 'provenance': [{'wikipedia_id': '44501', 'title': 'Cast Away', 'start_paragraph_id': 1, 'start_character': 165, 'end_paragraph_id': 1, 'end_character': 170, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44501', 'title': 'Cast Away', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 336, 'bleu_score': 0.8653858560553951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3100047108246479772}, 'section': 'Section::::Abstract.'}]}]