Two workers in uniform are standing next to some heavy machinery.
Two workers attempt to learn what's wrong with some heavy machinery.
Just because the workers are standing next to the heavy machinery, doesn't mean they are attempting to learn what's wrong with it.
exists e1 s1 x1 x2 x3.(to(e1,x3) & n_machinery(x3) & a_heavy(s1) & Theme(s1,x3) & r_next(e1) & Actor(e1,x1) & v_stand(e1) & in(x1,x2) & n_uniform(x2) & n_worker(x1) & card_eq_2(x1))
exists p1 x1 x2.(Topic(x1,p1) & exists e2 e1 p2 x3.(n_thing(x3) & Theme(e2,x3) & Actor(e2,x1) & v_learn(e2) & exists s1 s2 x4.(with(s1,x4) & n_machinery(x4) & a_heavy(s2) & Theme(s2,x4) & Theme(s1,x3) & a_wrong(s1)) & Topic(e1,p2) & Actor(e1,x3) & v_'s(e1)) & n_attempt(x1) & of(x1,x2) & n_worker(x2) & card_eq_2(x1) & a_topic(x1))