A quarterback passes a football during an NFL game.
People played tennis on clay courts.
Football and tennis are completely different sports.
exists e1 x1 x2 x3 x4.(during(e1,x3) & n_game(x3) & (x3 = x4) & ne_org_nfl(x4) & Theme(e1,x2) & Actor(e1,x1) & v_pass(e1) & n_football(x2) & n_quarterback(x1))
exists e1 x1 x2 x3 x4.(on(e1,x3) & n_court(x3) & of(x3,x4) & n_clay(x4) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_tennis(x2) & n_people(x1))