A red desk chair has been rolled away from the desk.
The chair is blue.
one is red while the other is blue
exists e1 s1 x1 x2.(from(e1,x2) & n_desk(x2) & n_desk(x2) & r_away(e1) & Theme(e1,x1) & v_roll(e1) & n_chair(x1) & of(x1,x2) & a_red(s1) & Theme(s1,x1))
exists s1 x1.(n_chair(x1) & Theme(s1,x1) & a_blue(s1))