Question: what was the foundation of the virginia colony's early economy
[{'answer': 'Tobacco', 'provenance': [{'wikipedia_id': '188900', 'title': 'Colony of Virginia', 'start_paragraph_id': 2, 'start_character': 518, 'end_paragraph_id': 2, 'end_character': 525, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '188900', 'title': 'Colony of Virginia', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 656, 'bleu_score': 0.9823771291847391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11757970526749293833}, 'section': 'Section::::Abstract.'}]}]