The chef is trying to debone a chicken.
A chef is removing the bones from a fish.
Chicken is not a fish
exists e1 p1 x1.(n_chef(x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_debone(e2) & n_chicken(x2)))
exists e1 x1 x2 x3.(n_bone(x2) & from(e1,x3) & n_fish(x3) & Theme(e1,x2) & Actor(e1,x1) & v_remove(e1) & n_chef(x1))