Question: where does salt come from in the sea
[{'answer': 'the evaporation of seawater', 'provenance': [{'wikipedia_id': '231065', 'title': 'Sea salt', 'start_paragraph_id': 1, 'start_character': 37, 'end_paragraph_id': 1, 'end_character': 64, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]