A child is looking at an exhibit.
The child is swimming in the ocean.
one child is looking at an exhibit while the other child is swimming
exists e1 x1 x2.(at(e1,x2) & n_exhibit(x2) & Actor(e1,x1) & v_look(e1) & n_child(x1))
exists e1 x1 x2.(n_ocean(x2) & n_child(x1) & in(e1,x2) & Actor(e1,x1) & v_swim(e1))