Context and question: In a response to Livingstone, Theodore Dobzhansky argued that when talking about race one must be attentive to how the term is being used: "I agree with Dr. Livingstone that if races have to be 'discrete units,' then there are no races, and if 'race' is used as an 'explanation' of the human variability, rather than vice versa, then the explanation is invalid." He further argued that one could use the term race if one distinguished between "race differences" and "the race concept." The former refers to any distinction in gene frequencies between populations; the latter is "a matter of judgment." He further observed that even when there is clinal variation, "Race differences are objectively ascertainable biological phenomena… but it does not follow that racially distinct populations must be given racial (or subspecific) labels." In short, Livingstone and Dobzhansky agree that there are genetic differences among human beings; they also agree that the use of the race concept to classify people, and how the race concept is used, is a matter of social convention. They differ on whether the race concept remains a meaningful and useful social convention.
What is merely "a matter of judgement"?
Answer: "the race concept."
Context and question: Prior to the 2011–2012 season, Barcelona had a long history of avoiding corporate sponsorship on the playing shirts. On 14 July 2006, the club announced a five-year agreement with UNICEF, which includes having the UNICEF logo on their shirts. The agreement had the club donate €1.5 million per year to UNICEF (0.7 percent of its ordinary income, equal to the UN International Aid Target, cf. ODA) via the FC Barcelona Foundation. The FC Barcelona Foundation is an entity set up in 1994 on the suggestion of then-chairman of the Economical-Statutory Committee, Jaime Gil-Aluja. The idea was to set up a foundation that could attract financial sponsorships to support a non-profit sport company. In 2004, a company could become one of 25 "Honorary members" by contributing between £40,000–60,000 (£54,800–82,300) per year. There are also 48 associate memberships available for an annual fee of £14,000 (£19,200) and an unlimited number of "patronages" for the cost of £4,000 per year (£5,500). It is unclear whether the honorary members have any formal say in club policy, but according to the author Anthony King, it is "unlikely that Honorary Membership would not involve at least some informal influence over the club".
What was the Barcelona foundation meant to attract? 
Answer: financial sponsorships
Context and question: The song "Tom's Diner" by Suzanne Vega was the first song used by Karlheinz Brandenburg to develop the MP3. Brandenburg adopted the song for testing purposes, listening to it again and again each time refining the scheme, making sure it did not adversely affect the subtlety of Vega's voice.
Who adjusted the song?
Answer:
Karlheinz Brandenburg