Question: what is the main cause of habitat destruction
[{'answer': 'Clearing habitats for agriculture', 'provenance': [{'wikipedia_id': '1707053', 'title': 'Habitat destruction', 'start_paragraph_id': 1, 'start_character': 363, 'end_paragraph_id': 1, 'end_character': 396, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1707053', 'title': 'Habitat destruction', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 892, 'bleu_score': 0.8908607726850971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16329234886348204187}, 'section': 'Section::::Abstract.'}]}]