Recently I had to compute the rational singular cohomology ring of a hypersurface in a product of projective spaces. I managed to do it, but only by interpreting this variety as a blowup of projective space. My question is: >> Given a nonsingular projective toric variety $X$ and a line bundle $L \to X$, is there a simple way of writing down the singular cohomology ring of the hypersurface cut out by $L$? By "simple" I am thinking of something not much more involved than the presentation given in Fulton's book of the integral cohomology ring of a nonsingular projective variety. I would be happy to know the answer in the special case that $X$ and the hypersurface are both Fano. The original question that came to my mind was whether there's a way of computing cohomology for a nonsingular complete intersection in a nonsingular projective toric variety, but after doing some browsing around I would guess that this is too much to hope for.