Given the task definition and input, reply with output. Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Context: The Rights of the Terminally Ill Act 1995 (NT) was a controversial law legalising euthanasia, passed by the Legislative Assembly of the Northern Territory of Australia in 1995, but effectively nullified in 1997 by the Federal Parliament.
Question: On what date did Rights of the Terminally Ill Act 1995 end?
1997