In this task, you are given a piece of an article. Your task is to generate a short summary of the text. Try to give the summary in just one sentence.

Thus, four of the nation's biggest institutional landlords -- among them Scottsdale-based Colony American Homes -- have teamed up to form a nonpartisan trade group that will advocate and educate the public, lawmakers and business leaders on their growing industry, according to a statement today.
Charles Djou says Congress needs more centrists like him.

When I say that the Padres upgraded their bullpen with Joaquin Benoit, I don't mean that they did so with just that signing.
The Phillies want to keep Chase Utley.

Campbell Soup says it's in final negotiations to sell its European business to private equity firm CVC Capital Partners for an undisclosed sum, the latest move by CEO Denise Morrison to reshape the company.

Beatrix, the queen, has undergone surgery.

