People enjoying lunch at tables in a park.
The people are eating lunch.
If the people are enjoying lunch then they must be eating lunch also.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x5) & n_park(x5) & at(e1,x4) & n_table(x4) & Theme(e1,x3) & Actor(e1,x2) & v_enjoy(e1) & n_lunch(x3) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_lunch(x2))