A woman in a sleeveless shirt grins in the direction of the man in the adjoining plush bus seat.
a woman and man on a bus
A woman grins at the man in the adjoining plush bus seat would imply that the woman and man are on the bus.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_seat(x6) & of(x6,x7) & n_bus(x7) & a_plush(s2) & Theme(s2,x6) & Actor(e1,x6) & v_adjoin(e1) & n_man(x5) & n_direction(x4) & a_topic(x1) & in(x1,x4) & in(x4,x6) & of(x4,x5) & in(x1,x2) & n_grin(x2) & of(x2,x3) & n_shirt(x3) & a_sleeveless(s1) & Theme(s1,x2) & n_woman(x1))
exists s1 x1 x2 x3.(a_topic(s1) & on(s1,x3) & n_bus(x3) & n_man(x2) & n_woman(x1) & subset_of(x2,s1) & subset_of(x1,s1))