A man in a white shirt walking in front of an old building.
a building is being walked past by a guy
The guy is a man and walking in front is a rephrasing of walked past.
exists s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & in(x2,x4) & of(x4,x5) & n_building(x5) & a_old(s2) & Theme(s2,x5) & n_front(x4) & n_walking(x2) & of(x2,x3) & n_shirt(x3) & a_white(s1) & Theme(s1,x2) & n_man(x1))
exists e1 p1 x1 x2.(Actor(e1,x2) & n_guy(x2) & exists s1.(Theme(s1,x1) & a_past(s1)) & Recipient(e1,p1) & Topic(e1,x1) & v_walk(e1) & n_building(x1))