Samajwadi Party General Secretary Amar Singh on Saturday said JD-U leader Nitish Kumar is Chief Minister of Bihar, thanks to RJD Chief Lalu Prasad."It is a greatness of Lalu Prasad that he has made Nitish Kumar, who had sent him to jail, Chief Minister of Bihar," Singh told the media soon after he arrived here."Nitish Kumar's chair of chief ministership is fully dependent on the support of Lalu Prasad," he added.Singh has described his party Chief Mulayam Singh Yadav as 'Sher of Uttar Pradesh' (lion of UP)."In UP, neither Lalu Prasad nor Nitish Kumar enjoy any social support base. In UP Mulayam Singh Yadav is a lion".Singh also said Nitish Kumar may go against Mulayam Singh Yadav in the upcoming Uttar Pradesh assembly polls but Lalu will support him.