Question: how many countries have joined the paris agreement
[{'answer': '160'}, {'provenance': [{'wikipedia_id': '30242372', 'title': 'Paris Agreement', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 534, 'bleu_score': 0.592409776060122, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8661149139883266015}, 'section': 'Section::::Abstract.'}]}]