the upper deck of a british bus that people are riding.
People are riding a bus.
The people are british. The bus is used for riding.
exists p1 s1 s2 x1 x2.(n_deck(x1) & a_upper(s1) & Theme(s1,x1) & a_topic(x1) & of(x1,x2) & Topic(x2,p1) & exists e1 x3.(Actor(e1,x3) & v_ride(e1) & n_people(x3)) & n_bus(x2) & a_british(s2) & Theme(s2,x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bus(x2) & n_people(x1))