Complex sentence: Bholanath and Devendra Pandey are two brothers who in 1978 hijacked an Indian Airlines plane on a domestic flight, to protest against the arrest of Indira Gandhi by Indian parliament.
Split into simpler sentences: Bholanath and Devendra Pandey are two bothers who in 1978 hijacked an Indian Airlines plane on its domestic flight. They hijacked the plane to protest against arrest of Indira Gandhi by Indian parliament.