A group of workers are waiting to be picked up.
A group of workers are working inside an office.
Waiting to be picked up implies the workers are outside. One cannot be inside the office and outside waiting to be picked up at the same time.
exists e1 p1 x1 x2.(Topic(e1,p1) & Actor(e1,x1) & v_wait(e1) & exists e2 s1.(a_up(s1) & Manner(e2,s1) & Theme(e2,x1) & v_pick(e2)) & of(x1,x2) & n_worker(x2) & n_group(x1))
exists e1 x1 x2 x3.(inside(e1,x3) & n_office(x3) & Actor(e1,x1) & v_work(e1) & of(x1,x2) & n_worker(x2) & n_group(x1))