Two people are weighing something in a silver can.
The people are doctors.
Two people are not assumed to be doctors.
exists e2 e1 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_weigh(e2) & in(x2,x3) & Actor(e1,x4) & v_can(e1) & (x3 = x4) & n_silver(x3) & n_thing(x2) & n_people(x1) & card_eq_2(x1))
exists p1 x1.(n_people(x1) & exists x2.((x1 = x2) & n_doctor(x2)))