A man is walking down the road while reading a paper.
A man is walking.
in both sentences, a man is walking.
exists e2 e1 s1 x1 x2 x3.(n_road(x2) & while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_read(e2) & n_paper(x3) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1))
exists e1 x1.(Actor(e1,x1) & v_walk(e1) & n_man(x1))