Many workers making their way in the heat of the fields.
Many workers in a field.
If they are in the heat of the fields, they are in a field.
exists e1 x1 x2 x3 x4.(n_field(x4) & n_heat(x3) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & in(x2,x3) & of(x3,x4) & n_way(x2) & of(x2,x1) & n_thing(x1) & n_worker(x1) & n_quantity(x1))
exists x1 x2.(a_topic(x1) & in(x1,x2) & n_field(x2) & n_worker(x1) & n_quantity(x1))