Instructions: 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.
Input: Passage: Everton also have links with Chilean team Everton de Vina del Mar who were named after the English club. On 4 August 2010, the two Evertons played each other in a friendly named the Copa Hermandad at Goodison Park to mark the centenary of the Chilean team, an occasion organised by The Ruleteros Society, a society founded to promote connections between the two clubs. Other Evertons exist in Rosario in Colonia Department, Uruguay, La Plata, and Rio Cuarto in Argentina, Elk Grove, California in the United States, and in Cork, Ireland.
Output:
On what date was Everton's California team established?