(1) The claim, defense, request, demand, objection, contention, or argument is not presented or maintained for any improper purpose, such as to harass or to cause unnecessary delay or needless increase in the cost of litigation;
(2) The claims, defenses, and other legal contentions therein are warranted by existing law or by a nonfrivolous argument for the extension, modification, or reversal of existing law or the establishment of new law;
(3) The allegations and other factual contentions have evidentiary support or, if specifically so identified, are likely to have evidentiary support after a reasonable opportunity for further investigation or discovery. An attorney providing drafting assistance may rely on the otherwise self-represented person's representation of facts, unless the attorney knows that such representations are false; and
(4) The denials of factual contentions are warranted on the evidence or, if specifically so identified, are reasonably based on a lack of information or belief.