Question: manufacture of salt from seawater is which change
[{'answer': 'evaporation', 'provenance': [{'wikipedia_id': '231065', 'title': 'Sea salt', 'start_paragraph_id': 1, 'start_character': 41, 'end_paragraph_id': 1, 'end_character': 52, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '231065', 'title': 'Sea salt', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 401, 'bleu_score': 0.9117189703365661, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6237208833469024923}, 'section': 'Section::::Abstract.'}]}]