Complex sentence: Nargelene Mendez is a Filipina national who was formerly a domestic worker in Arabia, and who has also alleged that she labored under inhumane slave-like working conditions, until her October rescue by a Philippine Embassy worker.
Split into simpler sentences: Nargelene Mendez is a Filipina national, and was formerly a domestic worker in Arabia. Mendez has made allegations that she was forced to labor under inhumane slave-like working conditions, until her October rescue by a Philippine Embassy worker.