Question: how many episodes are out for pretty little liars season 7
[{'answer': '20', 'provenance': [{'wikipedia_id': '49091814', 'title': 'Pretty Little Liars (season 7)', 'start_paragraph_id': 1, 'start_character': 177, 'end_paragraph_id': 1, 'end_character': 179, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '49091814', 'title': 'Pretty Little Liars (season 7)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 547, 'bleu_score': 0.9796927878356411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5237188274712979487}, 'section': 'Section::::Abstract.'}]}]