A group of people eats dinner together.
People are swimming in the ocean.
People cannot be swimming at the same time as eating.
exists e1 s1 x1 x2 x3.(a_together(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_eat(e1) & n_dinner(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(n_ocean(x2) & in(e1,x2) & Actor(e1,x1) & v_swim(e1) & n_people(x1))