A man driving a custom made firetruck.
A firefighter in a parade.
Not every man driving a custom made firetruck is a firefighter. Not every firetruck is driven in a parade.
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_drive(e2) & n_firetruck(x3) & Theme(e1,x3) & v_make(e1) & of(x3,x4) & n_custom(x4) & (x1 = x2) & n_man(x1))
exists x1 x2.(a_topic(x1) & in(x1,x2) & n_parade(x2) & n_firefighter(x1))