[Q]: The interdimensional hypothesis (IDH or IH), is an idea advanced by Ufologists such as Jacques Vallée that says unidentified flying objects (UFOs) and related events involve visitations from other "realities" or "dimensions" that coexist separately alongside our own. It is an alternative to the extraterrestrial hypothesis (ETH).  The interdimensional hypothesis (IDH or IH), is an idea advanced by Ufologists such as Jacques Vallée and this idea is considered irrelevant.
[A]: It's impossible to say

[Q]: Jefferson County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 741,096. It is the most populous county in Kentucky and is more than twice as large as the second most populous, Fayette. The county was formed in 1780 and named for future President Thomas Jefferson, who was Governor of Virginia at the time. Thomas Jefferson was a US president 
[A]: Yes

[Q]: The Hyundai Xcent is an A-segment sedan by Hyundai Motor Company. Based on the Hyundai Grand i10, the Xcent is manufactured by Hyundai Motor India Limited in Chennai. It made its debut on February 4, 2014, three days ahead of its world premiere at the Auto Expo 2014. Women prefer the Hyundai more so than men. 
[A]: It's impossible to say

[Q]: Tadpoles is the third album by the Bonzo Dog Band. It is largely a compilation of their work from the television show "Do Not Adjust Your Set", on which they were the house band. The US version of the album had a track list slightly different from that of the UK version: the US version removed "I'm the Urban Spaceman" and added "Readymades" the B-side of their follow-up single "Mr. Apollo". Do Not Adjust Your Set aired on TV from 2001 to 2004.
[A]:
It's impossible to say