Guy and girl in jackets while guy listens to mobile device
A guy and his girlfriend wear jackets.
A guy and girl together does not imply she is his girlfriend.
(-x)
exists s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & n_jacket(x2) & of(x2,x4) & n_wear(x4) & of(x2,x3) & n_girlfriend(x3) & of(x2,x1) & n_male(x1) & subset_of(x1,s1) & n_guy(x1))