Question: where does saliva come from in the mouth
[{'answer': 'the salivary glands', 'provenance': [{'wikipedia_id': '204420', 'title': 'Saliva', 'start_paragraph_id': 54, 'start_character': 399, 'end_paragraph_id': 54, 'end_character': 418, 'bleu_score': 1.0, 'section': 'Section::::Production.\n'}]}]