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Palestinian refugee children play next to a house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

Two Palestinian refugee children sit in the window sill of a house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

A Palestinian refugee stands by a mud wall in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt on Friday, May 17, 2013. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

An elderly Palestinian refugee sits at the entrance of her house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( APTOPIX Mideast Egypt Palestinian Refugees )

A Palestinian refugee prepares food as her children sit next to her in their house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

An elderly Palestinian refugee woman feeds a baby suffering from heat rash in a house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

A boy stands outside one of two bedrooms in a house of Palestinian refugee Khadra Mohammed, 52, where she lives with 19 people in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( APTOPIX Mideast Egypt Palestinian Refugees )

A Palestinian refugee sifts wheat for making bread, in her house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

A Palestinian refugee family sits outside of their house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

Two Palestinian refugee children lean on the wall of a house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

Palestinian refugees sit on plastic sacks of garbage outside a house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

In this Friday, May 17, 2013 photo, Palestinian refugees sit in front of a bicycle repair shop in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

Palestinian refugee Sulaiman al-Namodi, 92, sits outside of his house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( APTOPIX Mideast Egypt Palestinian Refugees )

A barefoot Palestinian refugee carries her sister outside their family's house in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( Mideast Egypt Palestinian Refugees )

Palestinian refugee Ahmed Sameer, 10, poses for a photograph in Gezirat al-Fadel village, Sharqiya, about 150 kilometers (93 miles) east of Cairo, Egypt. (AP Photo/Khalil Hamra) ( APTOPIX Mideast Egypt Palestinian Refugees )