A man and children work on the engine of an old truck.
The family is trying to repair their family truck.
A man and children are not identified to be related, as in family.
exists e1 s1 x1 x2 x3 x4 x5.(n_engine(x4) & on(e1,x4) & of(x4,x5) & n_truck(x5) & a_old(s1) & Theme(s1,x5) & Actor(e1,x1) & v_work(e1) & subset_of(x3,x1) & n_child(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 p1 x1 x2.(n_truck(x2) & of(x2,x1) & n_family(x1) & n_family(x1) & of(x2,x1) & n_thing(x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_repair(e2)))