instruction:
This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.
question:
Passage: Currently, (2004), there are principles of canon law common to the churches within the Anglican Communion; their existence can be factually established; each province or church contributes through its own legal system to the principles of canon law common within the Communion; these principles have a strong persuasive authority and are fundamental to the self-understanding of each of the churches of the Communion; these principles have a living force, and contain in themselves the possibility of further development; and the existence of these principles both demonstrates unity and promotes unity within the Anglican Communion. 
answer:
As of 2004 what to Anglican Communion churches no longer share?


question:
Passage: The three brothers—Rurik, Sineus, and Truvor—established themselves in Novgorod, Beloozero, and Izborsk, respectively. Two of the brothers died, and Rurik became the sole ruler of the territory and progenitor of the Rurik Dynasty. A short time later, two of Rurik’s men, Askold and Dir, asked him for permission to go to Tsargrad (Constantinople). On their way south, they discovered "a small city on a hill," Kiev, captured it and the surrounding country from the Khazars, populated the region with more Varangians, and "established their dominion over the country of the Polyanians."
answer:
What were the names of the three sisters that ruled Novgorod, Beloozero, and Izborsk?


question:
Passage: Santa Monica is featured in the video games True Crime: Streets of LA (2003), Vampire: The Masquerade – Bloodlines (2004), Grand Theft Auto San Andreas (2004) as a fictional district - Santa Maria Beach, Destroy All Humans! (2004), Tony Hawk's American Wasteland (2005), L.A. Rush (2005), Midnight Club: Los Angeles (2008), Cars Race-O-Rama (2009), Grand Theft Auto V (2013) as a fictional district – Del Perro, Call of Duty: Ghosts (2013) as a fictional U.S. military base – Fort Santa Monica, The Crew (2014), Need for Speed (2015)
answer:

In what year is Vampire: The Masquerade - Bloodlines set?