Many people sit at a long dinner table at a formal event.
People are sitting at a table at the gathering.
People can be encompassed within many people and a formal event is specific type of gathering.
exists e1 s1 s2 x1 x2 x3 x4.(at(e1,x4) & n_event(x4) & a_formal(s2) & Theme(s2,x4) & at(e1,x2) & n_table(x2) & of(x2,x3) & n_dinner(x3) & a_long(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & n_quantity(x1))
exists e1 x1 x2 x3.(n_gathering(x3) & at(e1,x3) & at(e1,x2) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1))