People cooking at a campsite.
workers are on a corporate retreat
Not all people are necessarily be workers. The fact that people cooking at a campsite doesn't imply that they are on a corporate retreat.
exists e1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_campsite(x3) & Actor(e1,x2) & v_cook(e1) & (x1 = x2) & n_people(x1))
exists p1 x1.(exists s1 x2.(on(x1,x2) & n_retreat(x2) & a_corporate(s1) & Theme(s1,x2)) & n_worker(x1))