Question: how many episodes in season 3 of heart of dixie
[{'answer': '22', 'provenance': [{'wikipedia_id': '39342062', 'title': 'Hart of Dixie (season 3)', 'start_paragraph_id': 50, 'start_character': 118, 'end_paragraph_id': 50, 'end_character': 120, 'bleu_score': 1.0, 'section': 'Section::::Home release.\n'}]}]