NEW YORK (Standard&Poor's) July 9, 2014--Standard&Poor's Ratings Services said today that its 'BBB-'corporate credit rating and stable outlook on U.S.-based Government Properties Income Trust (GOV) are unaffected by the REIT's acquisition of 21.5 million common shares of Select Income REIT (SIR), a company also managed by REIT Management&Research (RMR). While the acquisition of a stake in SIR is a departure from the company's focus on properties leased to governmental entities, we believe that SIR's underlying assets are fairly low risk as they consist of single-tenant net lease properties, some of which have embedded positive mark to market rents. This supports our assessment of GOV's business risk profile as "fair". Assuming the acquisition is financed