Question: what is the irrigation system for the central valley in california
[{'answer': 'The Central Valley Project', 'provenance': [{'wikipedia_id': '479159', 'title': 'Central Valley Project', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '479159', 'title': 'Central Valley Project', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 737, 'bleu_score': 0.8412521717700511, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13265993848658590613}, 'section': 'Section::::Abstract.'}]}]