Original sentence: Rachel Corrie an American member of the International Solidarity Movement (ISM) had traveled to the Gaza Strip during the Al-Aqsa Intifada.The IDF's own investigation concluded that she was killed in an accident by a falling debris the bulldozer pushed and that the driver didn't see her
Edited sentence: However, IDF invastagion concluded that she was killed in an accident by a falling debris the bulldozer pushed and that the driver didn't see her (authenticated by polygraph).Rachel Corrie an American member of the International Solidarity Movement (ISM)had traveled to the Gaza Strip during the Al-Aqsa Intifada