Question: what is the movie the constant gardener about
[{'answer': 'a British diplomat in Kenya', 'provenance': [{'wikipedia_id': '3598984', 'title': 'The Constant Gardener (film)', 'start_paragraph_id': 1, 'start_character': 223, 'end_paragraph_id': 1, 'end_character': 250, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'tries to solve the murder of his wife'}, {'provenance': [{'wikipedia_id': '3598984', 'title': 'The Constant Gardener (film)', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 403, 'bleu_score': 0.819281290978749, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5699769500512585054}, 'section': 'Section::::Abstract.'}]}]