A man and a woman on a scooter.
A man and woman out for a ride.
It is not implied that the man and woman are on the scooter for a ride.
exists s1 x1 x2 x3.(a_topic(s1) & subset_of(x2,s1) & on(x2,x3) & n_scooter(x3) & n_woman(x2) & subset_of(x1,s1) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(r_out(e1) & r_.(e1) & for(e1,x5) & n_ride(x5) & Theme(e1,x2) & Actor(e1,x1) & v_event(e1) & n_woman(x4) & n_man(x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_thing(x1))