One mechanic is sitting on the roof of a school bus with an open door, while the other is standing inside the bus.
The mechanic standing inside the bus is talking on his phone.
We have no idea if the guy is talking on his phone, he could be doing a number of things while in 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 e1 s1 x1 x2 x3.(n_phone(x3) & of(x3,x1) & n_male(x1) & n_bus(x2) & n_standing(x1) & a_mechanic(s1) & Theme(s1,x1) & on(e1,x3) & Actor(e1,x1) & v_talk(e1) & inside(x1,x2))