Race was asked differently in the Census 2000 in several other ways than previously. Most significantly, respondents were given the option of selecting one or more race categories to indicate racial identities. Data show that nearly seven million Americans identified as members of two or more races. Because of these changes, the Census 2000 data on race are not directly comparable with data from the 1990 census or earlier censuses. Use of caution is therefore recommended when interpreting changes in the racial composition of the US population over time.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): In what year were census respondents first able to select more than one race? 
Ah, so.. 2000

An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and facilities for carrying, arming, deploying, and recovering aircraft. Typically, it is the capital ship of a fleet, as it allows a naval force to project air power worldwide without depending on local bases for staging aircraft operations. Aircraft carriers are expensive to build and are critical assets. Aircraft carriers have evolved from converted cruisers to nuclear-powered warships that carry numerous fighter planes, strike aircraft, helicopters, and other types of aircraft.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What do aircraft carriers disallow naval forces to accomplish?
Ah, so.. unanswerable

In late 1977, music writers for Sounds first used the terms "New Musick" and "post punk" to describe British acts such as Siouxsie and the Banshees and Wire, who began experimenting with sounds, lyrics and aesthetics that differed significantly from their punk contemporaries. Writer Jon Savage described some of these early developments as exploring "harsh urban scrapings [,] controlled white noise" and "massively accented drumming". In January 1978, singer John Lydon (then known as Johnny Rotten) announced the break-up of his pioneering punk band the Sex Pistols, citing his disillusionment with punk's musical predictability and cooption by commercial interests, as well as his desire to explore more diverse interests.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What was seen as one of the least successful punk bands?
Ah, so..
unanswerable