Question: what is the strength of bjp in rajya sabha
[{'answer': '58', 'provenance': [{'wikipedia_id': '232210', 'title': 'Rajya Sabha', 'start_paragraph_id': 23, 'start_character': 44, 'end_paragraph_id': 23, 'end_character': 46, 'bleu_score': 1.0, 'section': 'Section::::Limitations.:Joint Sitting of the Parliament.\n'}]}]