A construction worker is performing a job on a sidewalk.
worker talking rest
One is not performing a job if one is talking a rest.
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_sidewalk(x4) & Theme(e1,x3) & Actor(e1,x1) & v_perform(e1) & n_job(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2))
exists e1 x1 x2.(n_rest(x1) & Actor(e1,x1) & v_talk(e1) & of(x1,x2) & n_worker(x2) & a_topic(x1))