A group of people playing instruments.
A group of people are eating tofu
Playing instruments is not possible while eating tofu.
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_instrument(x4) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_eat(e1) & n_tofu(x3) & of(x1,x2) & n_people(x2) & n_group(x1))