The German shepherd leaps off the stairs.
A dog begs for a treat.
A dog can't leap off the stairs while begging for a treat. The dog could leap then beg, but not at the same time.
exists e1 s1 s2 x1 x2.(n_stair(x2) & n_shepherd(x1) & a_german(s1) & Theme(s1,x1) & a_off(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_leap(e1))
exists x1 x2 x3.(a_topic(x1) & for(x1,x3) & n_treat(x3) & n_beg(x1) & of(x1,x2) & n_dog(x2))