The Borrower will file or cause to be filed all federal and other material tax returns which are required to be filed by it. The Borrower shall pay or cause to be paid all taxes shown to be due and payable on such returns or on any assessments received by it, other than any taxes or assessments, the validity of which are being contested in good faith by appropriate proceedings and with respect to which the Borrower shall have set aside or has caused to be set aside adequate reserves on its books (consolidated or otherwise) in accordance with GAAP.