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 Very high-speed Backbone Network Service (vBNS) came on line in April 1995 as part of a National Science Foundation (NSF) sponsored project to provide high-speed interconnection between NSF-sponsored supercomputing centers and select access points in the United States. The network was engineered and operated by MCI Telecommunications under a cooperative agreement with the NSF. By 1998, the vBNS had grown to connect more than 100 universities and research and engineering institutions via 12 national points of presence with DS-3 (45 Mbit/s), OC-3c (155 Mbit/s), and OC-12c (622 Mbit/s) links on an all OC-12c backbone, a substantial engineering feat for that time. The vBNS installed one of the first ever production OC-48c (2.5 Gbit/s) IP links in February 1999 and went on to upgrade the entire backbone to OC-48c.

SOLUTION: What were select locations connected to? 

PROBLEM: Passage: The effects of local surface low pressure are extremely limited because upper-level subsidence still continues to block any form of air ascent. Also, to be protected against rain-bearing weather systems by the atmospheric circulation itself, the desert is made even drier by his geographical configuration and location. Indeed, the extreme aridity of the Sahara can't be only explained by the subtropical high pressure. The Atlas Mountains, found in Algeria, Morocco and Tunisia also help to enhance the aridity of the northern part of the desert. These major mountain ranges act as a barrier causing a strong rain shadow effect on the leeward side by dropping much of the humidity brought by atmospheric disturbances along the polar front which affects the surrounding Mediterranean climates.

SOLUTION: what is blocked buy the surface low pressure?

PROBLEM: Passage: The Compacts of Free Association between the United States, the Federated States of Micronesia, the Republic of the Marshall Islands and the Republic of Palau accorded the former entities of the Trust Territory of the Pacific Islands a political status of "free association" with the United States. The Compacts give citizens of these island nations generally no restrictions to reside in the United States (also its territories), and many were attracted to Guam due to its proximity, environmental, and cultural familiarity. Over the years, it was claimed by some in Guam that the territory has had to bear the brunt of this agreement in the form of public assistance programs and public education for those from the regions involved, and the federal government should compensate the states and territories affected by this type of migration.[citation needed] Over the years, Congress had appropriated "Compact Impact" aids to Guam, the Northern Mariana Islands and Hawaii, and eventually this appropriation was written into each renewed Compact. Some, however, continue to claim the compensation is not enough or that the distribution of actual compensation received is significantly disproportionate.[citation needed]

SOLUTION:
Which Pacific Island is closest to the Republic of the Marshall Islands?