A man tries to sell people newspapers as they walk by.
cat chases string
First sentence talks about a man selling something while the second question talks about a cat chasing something
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 p2 x2 x3.(exists e3 s1.(a_by(s1) & Manner(e3,s1) & Actor(e3,x1) & v_walk(e3)) & as(e2,p2) & Recipient(e2,x3) & Theme(e2,x2) & Actor(e2,x1) & v_sell(e2) & n_people(x3) & n_newspaper(x2)) & n_thing(x1) & n_man(x1))
exists x1 x2 x3.(n_string(x1) & of(x1,x3) & n_chase(x3) & of(x1,x2) & n_cat(x2) & a_topic(x1))