31.   Orange County Health officials were trying to determine the origin of the syringes and whether they might be contaminated, Beuerlein said.

32.   Roman said the government will send scientists to the site Friday to determine its origins.

33.   Tallman said each has declined to help investigators determine their origin.

34.   The boat people were being brought to Sydney, where they will be interviewed to determine their origins, Vanstone said.

35.   The note was unsigned, and there was no way to determine its origins.

36.   The team was invited by the World Health Organization to help determine the origin of the outbreak and how to contain it, she said.

37.   To date, the authorities have yet to determine the origin of the oil slick.

38.   U.N. Military Observers based at the airport were trying to determine the origin of fire, Gunness said.

39.   U.N. Military Observers based at the airport were investigating to try to determine the origin of fire, Gunness said.

40.   U.N. spokesman Alexander Ivanko blamed Serbs there for organizing the bulk of the attacks and warned that peacekeepers will shoot back when they can determine its origin.