i1 : X = PP_(ZZ/3331)^({2,1,1},{2,1,3});
o1 : ProjectiveVariety, 4dimensional subvariety of PP^5 x PP^1 x PP^3

i2 : segreEmbedding X
o2 = multirational map consisting of one single rational map
source variety: 4dimensional subvariety of PP^5 x PP^1 x PP^3 cut out by 9 hypersurfaces of multidegrees (0,0,2)^3 (2,0,0)^6
target variety: PP^47
o2 : MultirationalMap (rational map from X to PP^47)
