Some people are eating at tables at an event.
People are sitting down eating.
Eating at tables implies sitting down eating.
exists e1 x1 x2 x3.(at(e1,x3) & n_event(x3) & at(e1,x2) & n_table(x2) & Actor(e1,x1) & v_eat(e1) & n_people(x1))
exists e1 s1 x1 x2.(Time(e1,x2) & n_eating(x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_people(x1))