Detailed 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.
Problem:Passage: Finland has used comprehensive schools since the 1970s, in the sense that everyone is expected to complete the nine grades of peruskoulu, from the age 7 to 16. The division to lower comprehensive school (grades 16, ala-aste, alakoulu) and upper comprehensive school (grades 79, ylaaste, ylakoulu) has been discontinued.
Solution:
In what decade didn't Finland begin employing comprehensive schools?