A white dog is trying to catch a ball in midair over a grassy field.
a pet playing outdoors
dog is  a pet. he is over a grassy field so the dog is outdoors.
exists e1 p1 s1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 s2 x2 x3 x4.(over(e2,x4) & n_field(x4) & a_grassy(s2) & Theme(s2,x4) & in(e2,x3) & n_midair(x3) & Theme(e2,x2) & Actor(e2,x1) & v_catch(e2) & n_ball(x2)) & n_dog(x1) & a_white(s1) & Theme(s1,x1))
exists s1 x1 x2.(a_topic(x1) & n_outdoors(x1) & of(x1,x2) & n_playing(x2) & a_pet(s1) & Theme(s1,x1))