Question: which period of the five year plan is called plan holiday
[{'answer': '1966 -- 67'}, {'answer': '1967 -- 68'}, {'answer': '1968 -- 69'}, {'provenance': [{'wikipedia_id': '2178164', 'title': 'Five-Year Plans of India', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 526, 'bleu_score': 0.785531111967227, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11430761088901558416}, 'section': 'Section::::Plan Holidays (1966–1969).\n'}]}]