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: The decline of Constantinople – a main trading partner of Kievan Rus' – played a significant role in the decline of the Kievan Rus'. The trade route from the Varangians to the Greeks, along which the goods were moving from the Black Sea (mainly Byzantine) through eastern Europe to the Baltic, was a cornerstone of Kiev wealth and prosperity. Kiev was the main power and initiator in this relationship, once the Byzantine Empire fell into turmoil and the supplies became erratic, profits dried out, and Kiev lost its appeal.[citation needed]
answer:
What played a minor rule in the decline of the Rus?


question:
Passage: The oak forests of the southern and central Appalachians consist largely of black, northern red, white, chestnut and scarlet oaks (Quercus velutina, Q. rubra, Q. alba, Q. prinus and Q. coccinea) and hickories, such as the pignut (Carya glabra) in particular. The richest forests, which grade into mesic types, usually in coves and on gentle slopes, have dominantly white and northern red oaks, while the driest sites are dominated by chestnut oak, or sometimes by scarlet or northern red oaks. In the northern Appalachians the oaks, except for white and northern red, drop out, while the latter extends farthest north.
answer:
What is the dominate type of oak in the Appalachians?


question:
Passage: Their first ever defeat on home soil to a foreign team was an 0–2 loss to the Republic of Ireland, on 21 September 1949 at Goodison Park. A 6–3 loss in 1953 to Hungary, was their second defeat by a foreign team at Wembley. In the return match in Budapest, Hungary won 7–1. This still stands as England's worst ever defeat. After the game, a bewildered Syd Owen said, "it was like playing men from outer space". In the 1954 FIFA World Cup, England reached the quarter-finals for the first time, and lost 4–2 to reigning champions Uruguay.
answer:

In what year was Goodison Park built?