A small black and brown long-haired dog prepares to catch a red ball in the grass.
a ball is about to be thrown at a dog.
A dog prepares to catch a red ball only when the ball is about to be thrown at the dog.
exists e1 p1 s1 s2 s3 s4 x1 x3.(n_grass(x3) & Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2 s5 x2.(in(e2,x3) & Theme(e2,x2) & Actor(e2,x1) & v_catch(e2) & n_ball(x2) & a_red(s5) & Theme(s5,x2)) & n_dog(x1) & a_long-haired(s4) & Theme(s4,x1) & a_brown(s3) & Theme(s3,x1) & a_black(s2) & Theme(s2,x1) & a_small(s1) & Theme(s1,x1))
exists p1 s1 x1.(Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1 x2.(at(e1,x2) & n_dog(x2) & Theme(e1,x1) & v_throw(e1)) & n_ball(x1))