someone working in a restaurant that has dishes set out like a buffet.
They are at the airport.
They refers to more than one person while someone is one individual, also they are either at the restaurant or at the airport.
exists e3 e1 e2 s1 x1 x2 x3 x4 x5 x6.(like(e3,x6) & n_buffet(x6) & a_out(s1) & Manner(e3,s1) & Theme(e3,x1) & v_set(e3) & in(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_have(e2) & n_dish(x5) & (x3 = x4) & n_restaurant(x3) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_person(x1))
exists p1 x1 x2.(n_airport(x2) & n_thing(x1) & at(x1,x2))