Two people are laughing and looking at a computer screen.
Two people are on the computer.
people looking at a computer screen is same as people are on the computer
exists e1 e2 x1 x2 x3 x4.(at(e2,x3) & n_screen(x3) & of(x3,x4) & n_computer(x4) & Actor(e2,x2) & v_look(e2) & n_people(x2) & card_eq_2(x2) & Actor(e1,x1) & v_laugh(e1) & n_people(x1) & card_eq_2(x1))
exists p1 x1 x2.(n_computer(x2) & on(x1,x2) & n_people(x1) & card_eq_2(x1))