TASK DEFINITION: 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: The Premier League is a corporation in which the 20 member clubs act as shareholders. Seasons run from August to May. Teams play 38 matches each (playing each team in the league twice, home and away), totalling 380 matches in the season. Most games are played on Saturday and Sunday afternoons; others during weekday evenings. It is currently sponsored by Barclays Bank and thus officially known as the Barclays Premier League and is colloquially known as the Premiership. Outside the UK it is commonly referred to as the English Premier League (EPL).

SOLUTION: Teams play each other 3 times in which league?

PROBLEM: Passage: Turner Classic Movies also airs regularly scheduled weekly film blocks, which are periodically preempted for special themed month-long or seasonal scheduling events, such as the "31 Days of Oscar" film series in the month preceding the Academy Awards and the month-long "Summer Under the Stars" in August; all featured programming has their own distinctive feature presentation bumper for the particular scheduled presentation. The Essentials, currently hosted by Osborne and Sally Field as of 2015[update], is a weekly film showcase airing on Saturday evenings (with a replay on the following Sunday at 6:00 p.m. Eastern Time), which spotlights a different movie and contains a special introduction and post-movie discussion.

SOLUTION: When does 15 Days of Oscar occur?

PROBLEM: Passage: The Reconquista of Portugal and Spain led to a series of oceanic explorations resulting in the Age of Discovery that established direct links with Africa, the Americas, and Asia, while religious wars continued to be fought in Europe, which ended in 1648 with the Peace of Westphalia. The Spanish crown maintained its hegemony in Europe and was the leading power on the continent until the signing of the Treaty of the Pyrenees, which ended a conflict between Spain and France that had begun during the Thirty Years' War. An unprecedented series of major wars and political revolutions took place around Europe and indeed the world in the period between 1610 and 1700. Observers at the time, and many historians since, have argued that wars caused the revolutions. Galileo Galilei, invented the telescope and the thermometer which allowed him to observe and describe the solar system. Leonardo da Vinci painted the most famous work in the world. Guglielmo Marconi invented the radio.

SOLUTION:
Which countries initiated the Peace of Westphalia following the Reconquista?