Original sentence: Hardeep Singh Nijjar (11 October 1977 – 18 June 2023) was a Canadian Sikh, head of a gurdwara in British Columbia and a Sikh separatist leader involved with the separatist Khalistan movement, which calls for an independent Sikh state to be carved out of India
Edited sentence: Hardeep Singh Nijjar (11 October 1977 – 18 June 2023) was a Canadian Sikh, head of a gurdwara in British Columbia and a Sikh nationalist involved with the separatist Khalistan movement, which calls for an independent Sikh state to be carved out of India