Samajwadi Party president Akhilesh Yadav on Friday sought to know the stand of Prime Minister Narendra Modi and Uttar Pradesh Chief Minister Yogi Adityanath on caste survey in the state. ?The former chief minister spoke about the issue during a visit to Noida, a day after Samajwadi Party MLAs disrupted the proceedings of the state assembly following their demand of conducting a caste survey in the state on the lines of Bihar being rejected by the Uttar Pradesh government.?