One mechanic is sitting on the roof of a school bus with an open door, while the other is standing inside the bus.
Two peole are at work.
The two people are mechanics are two people that are working on the bus.
exists e1 p1 s1 x1 x2 x3 x4 x5 x6.(n_other(x6) & n_roof(x2) & exists e2.(inside(e2,x3) & Actor(e2,x6) & v_stand(e2)) & n_bus(x3) & n_bus(x3) & while(e1,p1) & with(e1,x5) & n_door(x5) & a_open(s1) & Theme(s1,x5) & on(e1,x2) & of(x2,x3) & of(x3,x4) & n_school(x4) & Actor(e1,x1) & v_sit(e1) & n_mechanic(x1) & card_eq_1(x1))
exists p1 x1.(exists x2.(at(x1,x2) & n_work(x2)) & n_peole(x1) & card_eq_2(x1))