A man plays the guitar while sitting against a building.
A man is sitting against a building playing cards.
guitar is different from cards.
exists e2 e1 x1 x2 x3.(n_guitar(x2) & while(e1,e2) & against(e2,x3) & n_building(x3) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))
exists e1 x1 x2 x3 x4.(against(e1,x2) & n_card(x2) & of(x2,x4) & n_playing(x4) & of(x2,x3) & n_building(x3) & Actor(e1,x1) & v_sit(e1) & n_man(x1))