Someone is flipping on a blue trampoline.
A person sitting on a yellow trampoline.
A person cannot be flipping at the same time the person is sitting. A blue trampoline is not a yellow trampoline.
exists e1 s1 x1 x2.(on(e1,x2) & n_trampoline(x2) & a_blue(s1) & Theme(s1,x2) & Actor(e1,x1) & v_flip(e1) & n_person(x1))
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_trampoline(x3) & a_yellow(s1) & Theme(s1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_person(x1))