Gaurav, Bidisha, Vani, Umesh and Sanat live on five different floors, numbered from 1 to 5, of the same building. Sanat lives on an even numbered floor but not on floor number four. Only two people live between Sanat and Umesh. Bidisha lives immediately below Umesh. Gaurav lives on an odd numbered floor. Vani does not live on the lowermost floor. Who lives on the lowermost floor?