entries(MultirationalMap) -- list the defining polynomials of a rational map

i1 : Phi = inverse first graph segreEmbedding PP_(ZZ/13)^{1,2,1};

o1 : MultirationalMap (birational map from PP^1 x PP^2 x PP^1 to 4-dimensional subvariety of PP^1 x PP^2 x PP^1 x PP^11)

i2 : entries Phi

o2 = {{x0 , x0 }, {x1 , x1 , x1 }, {x2 , x2 }, {x0 x1 x2 , x0 x1 x2 ,
         0    1      0    1    2      0    1      0  0  0    0  0  1 
     ------------------------------------------------------------------------
     x0 x1 x2 , x0 x1 x2 , x0 x1 x2 , x0 x1 x2 , x0 x1 x2 , x0 x1 x2 ,
       0  1  0    0  1  1    0  2  0    0  2  1    1  0  0    1  0  1 
     ------------------------------------------------------------------------
     x0 x1 x2 , x0 x1 x2 , x0 x1 x2 , x0 x1 x2 }}
       1  1  0    1  1  1    1  2  0    1  2  1

o2 : List