A dog jumping in the air to retrieve a stick from a man.
A puppy is playing fetch.
Just because retrieve a stick does not mean it is playing fetch.
exists e1 p1 x1 x2 x3 x4.(n_air(x4) & a_topic(x1) & Topic(e1,p1) & exists e2 x5 x6.(Theme(e2,x5) & Actor(e2,x2) & v_retrieve(e2) & from(x5,x6) & n_man(x6) & n_stick(x5)) & in(e1,x4) & Actor(e1,x3) & v_jump(e1) & (x1 = x3) & (x1 = x2) & n_dog(x1))
exists e1 s1 x1.(a_fetch(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1) & n_puppy(x1))