A water truck creates a rainbow across a street.
A water truck sprays water.
The water truck sprays water, which creates a rainbow.
exists e1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_create(e1) & across(x3,x4) & n_street(x4) & n_rainbow(x3) & n_truck(x1) & of(x1,x2) & n_water(x2))
exists x1 x2 x3 x4.(a_topic(x1) & n_water(x1) & of(x1,x4) & n_spray(x4) & of(x1,x3) & n_truck(x3) & of(x1,x2) & n_water(x2))