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.

Ex Input:
Passage: The Standard Model groups matter particles into three generations, where each generation consists of two quarks and two leptons. The first generation is the up and down quarks, the electron and the electron neutrino; the second includes the charm and strange quarks, the muon and the muon neutrino; the third generation consists of the top and bottom quarks and the tau and tau neutrino. The most natural explanation for this would be that quarks and leptons of higher generations are excited states of the first generations. If this turns out to be the case, it would imply that quarks and leptons are composite particles, rather than elementary particles.

Ex Output:
What model has two generations?


Ex Input:
Passage: Selenizza is a naturally occurring solid hydrocarbon bitumen found in the native asphalt deposit of Selenice, in Albania, the only European asphalt mine still in use. The rock asphalt is found in the form of veins, filling cracks in a more or less horizontal direction. The bitumen content varies from 83% to 92% (soluble in carbon disulphide), with a penetration value near to zero and a softening point (ring & ball) around 120 °C. The insoluble matter, consisting mainly of silica ore, ranges from 8% to 17%.

Ex Output:
The soluble matter consists mainly of silica ore and ranges from what percentage?


Ex Input:
Passage: In 1958, he became a Boy Scout and fulfilled a requirement for the photography merit badge by making a nine-minute 8 mm film entitled The Last Gunfight. Years later, Spielberg recalled to a magazine interviewer, "My dad's still-camera was broken, so I asked the scoutmaster if I could tell a story with my father's movie camera. He said yes, and I got an idea to do a Western. I made it and got my merit badge. That was how it all started." At age thirteen, while living in Phoenix, Spielberg won a prize for a 40-minute war film he titled Escape to Nowhere, using a cast composed of other high school friends. That motivated him to make 15 more amateur 8mm films.:548 In 1963, at age sixteen, Spielberg wrote and directed his first independent film, a 140-minute science fiction adventure called Firelight, which would later inspire Close Encounters. The film was made for $500, most of which came from his father, and was shown in a local cinema for one evening, which earned back its cost.

Ex Output:

How many high school friends did Spielberg have?