A black and white dog on an orange leash jumps in a field.
A black and white dog are swimming in a lake.
"Jumps" indicates one dog that is black and white, "are swimming" indicates more than one dog, one that is black and one that is white. The dog is either jumping or swimming.
exists s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x2) & in(x2,x5) & n_field(x5) & n_jump(x2) & of(x2,x4) & n_leash(x4) & of(x2,x3) & n_orange(x3) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2.(in(e1,x2) & n_lake(x2) & Actor(e1,x1) & v_swim(e1) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))