She sits alone on the city bus while a man reads his newspaper behind her.
There are people on a bus.
A man and she implies that there are people on a bus.
exists e1 p1 s1 x1 x2 x3 x5.(n_female(x1) & n_female(x1) & n_newspaper(x5) & of(x5,x2) & n_male(x2) & n_bus(x2) & of(x2,x3) & n_city(x3) & exists e2 x4.(Theme(e2,x5) & Actor(e2,x4) & v_read(e2) & behind(x5,x1) & n_man(x4)) & while(e1,p1) & on(e1,x2) & a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1))
exists p1 x1 x2 x3.((x1 = x2) & on(x2,x3) & n_bus(x3) & n_people(x2))