Workmen digging a trench.
younger men are digging
just because workmen are digging a trench doesn't mean they are  younger
exists e1 x1 x2.(ne_nam_workmen(x1) & Theme(e1,x2) & Actor(e1,x1) & v_dig(e1) & n_trench(x2))
exists e1 s1 x1.(Actor(e1,x1) & v_dig(e1) & n_man(x1) & r_more(s1) & a_younger(s1) & Theme(s1,x1))