Commitments and Contingencies In addition to the commitments and contingencies disclosed elsewhere, the Partnership has the following commitments and contingencies. The Partnership is obligated under certain tenant leases, including its proportionate share for leases for non-consolidated entities, to fund the expansion of the underlying leased properties. The Partnership, under certain circumstances, may guarantee to tenants the completion of base building improvements and the payment of tenant improvement allowances and lease commissions on behalf of its subsidiaries. The Partnership and Lexington are parties to a funding agreement under which Lexington may be required to fund distributions made on account of OP units. Pursuant to the funding agreement, if the Partnership does not have sufficient cash available to make a quarterly distribution to its limited partners in an amount in accordance with the partnership agreement, Lexington is required to fund the shortfall. Payments under the agreement will be made in the form of loans to the Partnership and will bear interest at prevailing rates as determined by Lexington in its discretion, but no less than the applicable federal rate. The Partnership's right to receive these loans will expire if no OP units remain outstanding and all such loans are repaid. No amounts had been advanced under this funding agreement. In May 2014, the Partnership guaranteed $250,000 aggregate principal amount of 4.40% Senior Notes due 2024 (2024 Senior Notes) issued by Lexington at an issuance price of 99.883% of the principal amount and in June 2013, the Partnership guaranteed $250,000 aggregate principal amount of 4.25% Senior Notes due 2023 (2023 Senior Notes) issued by Lexington at an issuance price of 99.026% of the principal amount, collectively referred to as the Senior Notes. The Senior Notes are unsecured and pay interest semi-annually in arrears. Lexington may redeem the Senior Notes at its option at any time prior to maturity in whole or in part by paying the principal a