Two people working on an assembly line.
Two people are assembling pieces of a car on an assembly line.
People may or may not be assembling pieces of a car.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_line(x3) & of(x3,x4) & n_assembly(x4) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x2) & Actor(e1,x1) & v_assemble(e1) & on(x2,x4) & n_line(x4) & of(x4,x5) & n_assembly(x5) & of(x2,x3) & n_car(x3) & n_piece(x2) & n_people(x1) & card_eq_2(x1))