51.   The bus hit a car that was trying to prevent its escape and knocked down a woman.

52.   The gas acts like the glass in a greenhouse, letting sunlight in, but preventing the escape of heat.

53.   The government said officials were hunting for the man and that security measures would be reviewed to prevent further escapes.

54.   The defectors told a news conference Tuesday that the food shortage has gotten worse, and that border security has been tightened to prevent increasing escapes.

55.   The video showed prison guards managing to prevent the escape of many more inmates.

56.   They did not shoot because a heavy police presence on the streets would have prevented their escape.

57.   Three other fly-covered Taliban bodies lay in empty market stalls, their big toes looped together with cords to prevent escape.

58.   To prevent an escape, the toilet was reinforced with wire netting and grill.

59.   Two navy gunboats also anchored off the island, apparently to prevent rebel escape.

60.   He said riot police were deployed around the building to prevent escapes.