Book 7 - attacking
Understand "a [something]" as attacking.
Understand "a", "attack", "break", "smash", "hit", "fight", "wreck", "crack", "destroy", "murder", "kill", "punch", "thump" as attacking.
Rule for supplying a missing noun while attacking (this is the obvious target rule):
if a monster is in the location:
let lom be the list of monsters in the location;
let mo be entry 1 of lom;
now the noun is mo;
else:
say "There are no monsters here." instead.