2006 New York Code - Answer.

 
    §  1517.  Answer.  The defendant may, in his answer, deny any material
  allegation of the complaint controverted by him,  or  any  knowledge  or
  information  thereof sufficient to form a belief, or may set forth facts
  constituting a defense; and thereupon he may demand judgment  dismissing
  the  complaint.    He may also set forth facts as a counterclaim for the
  same cause of action; or the defendant may set forth facts showing  that
  he  has  an  estate  or  interest in said property; and thereupon he may
  demand any judgment to which he would be entitled in an  action  brought
  by  him  to recover that estate or to enforce in any manner the interest
  which he asserts in such property; or he may combine any two or more  of
  said demands.