Question: who won a best director oscar for the 2012 film life of pi
[{'answer': 'Ang Lee', 'provenance': [{'wikipedia_id': '30952655', 'title': 'Life of Pi (film)', 'start_paragraph_id': 1, 'start_character': 105, 'end_paragraph_id': 1, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30952655', 'title': 'Life of Pi (film)', 'start_paragraph_id': 102, 'start_character': 0, 'end_paragraph_id': 102, 'end_character': 836, 'bleu_score': 0.9858648355536391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6370228240926237244}, 'section': 'Section::::Reception.:Accolades.\n'}]}]