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.

Passage: Between 1346 and 1354, Tai Situ Changchub Gyaltsen toppled the Sakya and founded the Phagmodrupa Dynasty. The following 80 years saw the founding of the Gelug school (also known as Yellow Hats) by the disciples of Je Tsongkhapa, and the founding of the important Ganden, Drepung and Sera monasteries near Lhasa. However, internal strife within the dynasty and the strong localism of the various fiefs and political-religious factions led to a long series of internal conflicts. The minister family Rinpungpa, based in Tsang (West Central Tibet), dominated politics after 1435. In 1565 they were overthrown by the Tsangpa Dynasty of Shigatse which expanded its power in different directions of Tibet in the following decades and favoured the Karma Kagyu sect.
Who topped the Sakya between 1436 and 1534?

Passage: The campus also houses several performing arts facilities. The de Jong Concert Hall seats 1282 people and is named for Gerrit de Jong Jr. The Pardoe Theatre is named for T. Earl and Kathryn Pardoe. Students use its stage in a variety of theatre experiments, as well as for Pardoe Series performances. It seats 500 people, and has quite a large stage with a proscenium opening of 19 by 55 feet (17 m). The Margetts Theatre was named for Philip N. Margetts, a prominent Utah theatre figure. A smaller, black box theater, it allows a variety of seating and staging formats. It seats 125, and measures 30 by 50 feet (15 m). The Nelke Theatre, named for one of BYU's first drama teachers, is used largely for instruction in experimental theater. It seats 280.
What is named after T. Earl and Gerrit de Jong Jr.?

Passage: In the past, the floor exercise event was executed on the bare floor or mats such as wrestling mats. Today, the floor event occurs on a carpeted 12m × 12m square, usually consisting of hard foam over a layer of plywood, which is supported by springs or foam blocks generally called a "spring" floor. This provides a firm surface that provides extra bounce or spring when compressed, allowing gymnasts to achieve greater height and a softer landing after the composed skill. Gymnasts perform a choreographed routine up to 90 seconds in the floor exercise event; Depending on the level, they may choose their own, or, if known as a "compulsory gymnast," default music must be played. In some gymnastic associations such as United States Association of Gymnastic Clubs (USAIGC), gymnasts are allowed to have vocals in their music but at USA Gymnastics competitions a large deduction is taken from the score for having vocals in the music. The routine should consist of tumbling lines, series of jumps, leaps, dance elements, acrobatic skills, and turns, or piviots, on one foot. A gymnast can perform up to four tumbling lines that usually includes at least one flight element without hand support. Each level of gymnastics requires the athlete to perform a different number of tumbling passes. In level 7 in the United States, a gymnast is required to do 2–3, and in levels 8–10, at least 3–4 tumbling passes are required.

What kind of surface is banned from the Olympics?