Men are standing next to some sort of hydraulic machine.
Men are standing next to a machine they have to repair.
Just because men are standing next to a machine it does not mean they have to repair it.
exists e1 s1 x1 x2 x3.(to(e1,x2) & of(x2,x3) & n_machine(x3) & a_hydraulic(s1) & Theme(s1,x3) & n_sort(x2) & r_next(e1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 e2 p1 x1 x2.(to(e1,x2) & Topic(e2,p1) & Actor(e2,x1) & v_have(e2) & exists e3 x3.(Theme(e3,x3) & Actor(e3,x1) & v_repair(e3) & (x2 = x3)) & n_thing(x1) & n_machine(x2) & r_next(e1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))