Perform the DEFAULT single tier reduction. This reduces the entire set of nodes that matched a rule phrase.
# Since @POST is non-empty, you must explicitly specify reduction.
single(); # NEEDED, or computer will not reduce to _noun.
_noun <- computer @@
# In this case, @POST is empty, so single() occurs by default.
_noun <- sheep @@
singler, singlex, singlezap, noop, POST Actions