21.   Parents have started community patrols around school playgrounds and parks.

22.   School playgrounds have been off-limits since the food poisoning, public swimming pools have shut down, and some summer camps were canceled.

23.   She began a foundation to raise money to fix the school playgrounds.

24.   The exercise surgeon general could appear at school playgrounds, not adolescent health clinics.

25.   The stigma of obesity is never more blatant than on the school playground.

26.   The same argument surrounds funds that ostensibly would be used to build shade areas on the Pappas school playground.

27.   These are likely to be odd jobs, like cleaning parks or monitoring school playgrounds, that welfare enrollees would perform in exchange for benefits.

28.   This year was supposed to be less stressful, with the city planning to install temporary trailers as classroom annexes on some school playgrounds by next fall.

29.   To his left was a loaded anti-aircraft gun on a school playground.

30.   A U.S. Navy helicopter made an emergency landing Tuesday in the middle of a school playground in central Japan, local police and U.S. military officials said.