Employees of a park discussing work.
A group of people work at a park.
The group of people working at the  park have to be employees.
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_discuss(e1) & n_work(x4) & (x2 = x3) & n_park(x2) & n_employee(x1))
exists e1 x1 x2 x3.(at(e1,x3) & n_park(x3) & Actor(e1,x1) & v_work(e1) & of(x1,x2) & n_people(x2) & n_group(x1))