Question: how many episodes are there in liar itv
[{'answer': '6', 'provenance': [{'wikipedia_id': '54347353', 'title': 'Liar (TV series)', 'start_paragraph_id': 1, 'start_character': 373, 'end_paragraph_id': 1, 'end_character': 374, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]