Prospectus excerpt:  We are offering 4,400,000 of our 7.75% Series A Cumulative Redeemable Preferred Shares, par value $0.01 per share, which we refer to as our Series A Preferred Shares. This is our original issuance of Series A Preferred Shares, and we have no other preferred shares outstanding.

Dividends on the Series A Preferred Shares will be payable quarterly in arrears on or about the 15th day of January, April, July, and October of each year. The dividend rate is 7.75% per annum of the $25.00 liquidation preference, which is equivalent to $1.9375 per share. The first dividend on the Series A Preferred Shares sold in this offering will be paid on October 15, 2012 and will be in the amount of $0.4736 per share.

Generally, we may not redeem the Series A Preferred Shares until July 17, 2017. On and after July 17, 2017, we may, at our option, redeem the Series A Preferred Shares, in whole or from time to time in part, by paying $25.00 per share, plus any accrued and unpaid dividends to, but not including, the date of redemption. In addition, upon the occurrence of a Change of Control (as defined herein), as a result of which neither our common shares of beneficial interest, par value $0.01 per share, nor the common securities of the acquiring or surviving entity (or American Depositary Receipts, or ADRs, representing such common securities) are listed on the New York Stock Exchange, or NYSE, the NYSE Amex Equities, or NYSE Amex, or the NASDAQ Stock Market, or NASDAQ, or listed or quoted on a successor exchange or quotation system, we may, at our option, redeem the Series A Preferred Shares, in whole or in part within 120 days after the first date on which such Change of Control occurred, by paying $25.00 per share, plus any accrued and unpaid dividends to, but not including, the date of redemption. If we exercise any of our redemption rights relating to the Series A Preferred Shares, the holders of Series A Preferred Shares will not be permitted to exercise the conversion right described below in respect of their shares called for redemption. The Series A Preferred Shares have no maturity date and will remain outstanding indefinitely unless redeemed by us or converted in connection with a Change of Control by the holders of Series A Preferred Shares.