Guy and girl in jackets while guy listens to mobile device
A woman listens to her mobile device.
Sentence 1 mentions "Guy listens to mobile device" whereas sentence 2 mentions a woman listening to her mobile device. If these two people were in each other's presence, there would be no reason that both would be listening to separate devices.
(-x)
exists e1 s1 x1 x2.(to(e1,x2) & n_device(x2) & a_mobile(s1) & Theme(s1,x2) & of(x2,x1) & n_female(x1) & Actor(e1,x1) & v_listen(e1) & n_woman(x1))