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 logical format of an audio CD (officially Compact Disc Digital Audio or CD-DA) is described in a document produced in 1980 by the format's joint creators, Sony and Philips. The document is known colloquially as the Red Book CD-DA after the colour of its cover. The format is a two-channel 16-bit PCM encoding at a 44.1 kHz sampling rate per channel. Four-channel sound was to be an allowable option within the Red Book format, but has never been implemented. Monaural audio has no existing standard on a Red Book CD; thus, mono source material is usually presented as two identical channels in a standard Red Book stereo track (i.e., mirrored mono); an MP3 CD, however, can have audio file formats with mono sound.

Ex Output:
What was the sampling rate for the four-channel sound?


Ex Input:
Passage: Roman canon law had been criticized by the Presbyterians as early as 1572 in the Admonition to Parliament. The protest centered on the standard defense that canon law could be retained so long as it did not contradict the civil law. According to Polly Ha, the Reformed Church Government refuted this claiming that the bishops had been enforcing canon law for 1500 years.

Ex Output:
What group supported roaming cannons?


Ex Input:
Passage: Every continued in pursuit and managed to overhaul Ganj-i-Sawai, which resisted strongly before eventually striking. Ganj-i-Sawai carried enormous wealth and, according to contemporary East India Company sources, was carrying a relative of the Grand Mughal, though there is no evidence to suggest that it was his daughter and her retinue. The loot from the Ganj-i-Sawai had a total value between £325,000 and £600,000, including 500,000 gold and silver pieces, and has become known as the richest ship ever taken by pirates.

Ex Output:

How many extraterrestrial pieces were on the Ganj-i-Sawai?