A collie is running through an obstacle course
A big collie is running through an obstacle course
A collie isn't necessary big.
exists e1 x1 x2 x3.(through(e1,x2) & n_course(x2) & of(x2,x3) & n_obstacle(x3) & Actor(e1,x1) & v_run(e1) & n_collie(x1))
exists e1 s1 x1 x2 x3.(through(e1,x2) & n_course(x2) & of(x2,x3) & n_obstacle(x3) & Actor(e1,x1) & v_run(e1) & n_collie(x1) & a_big(s1) & Theme(s1,x1))