Workers constructing a temporary structure.
The workers are building a hut.
A hut can be a long-standing structure. It is possible to have a temporary structure that is not a hut.
exists e1 s1 x1 x2.(ne_nam_workers(x1) & Theme(e1,x2) & Actor(e1,x1) & v_construct(e1) & n_structure(x2) & a_temporary(s1) & Theme(s1,x2))
exists e1 x1 x2.(n_worker(x1) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_hut(x2))