A black and white dog is jumping up to catch a toy as another dog watches.
There are two dogs, and one of them is playing.
Another dog implies there are two dogs, catch a toy is a rephrasing of playing.
exists e1 p1 s1 s2 s3 s4 s5 x1 x2 x4.(Topic(e1,p1) & exists e2 x3 x5 x6.(Theme(e2,x3) & Actor(e2,x1) & v_catch(e2) & as(x3,x5) & n_watch(x5) & of(x5,x6) & n_dog(x6) & -(x5 = x4) & n_toy(x3)) & n_watch(x4) & of(x4,x1) & n_dog(x1) & n_dog(x1) & a_up(s5) & Manner(e1,s5) & Actor(e1,x2) & v_jump(e1) & n_dog(x2) & a_white(s4) & Theme(s4,x2) & a_black(s3) & Theme(s3,x2) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))
exists e1 p1 x1 x2 x3.(n_thing(x3) & Actor(e1,x2) & v_play(e1) & of(x2,x3) & n_thing(x2) & card_eq_1(x2) & exists x4.((x1 = x4) & n_dog(x4) & card_eq_2(x4)))