A man who appears to be homeless or a drifter.
A man looks homeless.
"who appears to be" is synonymous with "looks"
(exists e1 p1 x1 x2.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_appear(e1) & exists s1.(Theme(s1,x2) & a_homeless(s1)) & (x1 = x2) & n_man(x1)) | exists x3.(a_topic(x3) & n_drifter(x3)))
exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_homeless(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_look(e1) & n_man(x1))