Construction workers pouring cement.
The construction workers are pouring a foundation
Not all poured cement is a foundation.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_pour(e1) & n_cement(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2))
exists e1 x1 x2 x3.(n_worker(x1) & of(x1,x2) & n_construction(x2) & Theme(e1,x3) & Actor(e1,x1) & v_pour(e1) & n_foundation(x3))