A person in a motocross uniform, and wearing a helmet, rides a red motorcycle.
A person in a motocross uniform is riding a blue motorycle.
The person in the motocross uniform is riding a red motorcycle, not a blue motorcycle.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6 x7.(Theme(e2,x7) & Actor(e2,x1) & v_ride(e2) & n_motorcycle(x7) & a_red(s1) & Theme(s1,x7) & subset_of(e1,x1) & Theme(e1,x6) & Actor(e1,x5) & v_wear(e1) & n_helmet(x6) & n_thing(x5) & subset_of(x2,x1) & in(x2,x3) & n_uniform(x3) & of(x3,x4) & n_motocross(x4) & n_person(x2))
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & n_motorycle(x4) & a_blue(s1) & Theme(s1,x4) & in(x1,x2) & n_uniform(x2) & of(x2,x3) & n_motocross(x3) & n_person(x1))