The realization space is
  [1   0   1        1   0   1    1    0            1    1    1]
  [0   1   1   x1 + 1   0   0    0    1            1   x1   x1]
  [0   0   0        0   1   1   x2   -1   x1*x2 - x2    1   x2]
in the multivariate polynomial ring in 2 variables over ZZ
within the vanishing set of the ideal
Ideal (x1^2 - x1 - 1)
avoiding the zero loci of the polynomials
RingElem[x1, x2 - 1, x1 - 1, x1 - 2, x2, x1^2*x2 - x1*x2 - x1 - x2 + 1, x1*x2 - x1 - 2*x2 + 1, x1 + x2, x1 + x2 - 1, x1*x2 + x2 - 1, x1 + 1, x1^2*x2 - x1*x2 - 1, x1*x2 - x2 - 1, x1*x2 - x1 - x2, x1^2*x2 - 2*x1*x2 + x2 - 1, x1 - x2 + 1, x1*x2 - x2 + 1, x1*x2 - 2*x2 + 1, x1^2*x2 - x1 - x2]