Some people wandering near a construction field.
Some people wandering near an empty construction field.
Not all construction fields are empty.
exists e1 x1 x2 x3 x4.(a_topic(x1) & near(e1,x3) & n_field(x3) & of(x3,x4) & n_construction(x4) & Actor(e1,x2) & v_wander(e1) & (x1 = x2) & n_people(x1))
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & near(e1,x3) & n_field(x3) & of(x3,x4) & n_construction(x4) & a_empty(s1) & Theme(s1,x3) & Actor(e1,x2) & v_wander(e1) & (x1 = x2) & n_people(x1))