instruction:
This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.
question:
Passage: Beer is composed mostly of water. Regions have water with different mineral components; as a result, different regions were originally better suited to making certain types of beer, thus giving them a regional character. For example, Dublin has hard water well-suited to making stout, such as Guinness; while the Plzeň Region has soft water well-suited to making Pilsner (pale lager), such as Pilsner Urquell. The waters of Burton in England contain gypsum, which benefits making pale ale to such a degree that brewers of pale ales will add gypsum to the local water in a process known as Burtonisation. Question: What type of water is good for making stout beer, like Guinness?
answer:
hard water


question:
Passage: Multiracial Americans are Americans who have mixed ancestry of "two or more races". The term may also include Americans of mixed-race ancestry who self-identify with just one group culturally and socially (cf. the one-drop rule). In the 2010 US census, approximately 9 million individuals, or 2.9% of the population, self-identified as multiracial. There is evidence that an accounting by genetic ancestry would produce a higher number, but people live according to social and cultural identities, not DNA. Historical reasons, including slavery creating a racial caste and the European-American suppression of Native Americans, often led people to identify or be classified by only one ethnicity, generally that of the culture in which they were raised. Prior to the mid-20th century, many people hid their multiracial heritage because of racial discrimination against minorities. While many Americans may be biologically multiracial, they often do not know it or do not identify so culturally, any more than they maintain all the differing traditions of a variety of national ancestries. Question: Why did muticultural Americans hid their heritage?
answer:
many people hid their multiracial heritage because of racial discrimination against minorities


question:
Passage: In January 1957, the US adopted the Eisenhower Doctrine and pledged to prevent the spread of communism and its perceived agents in the Middle East. Although Nasser was an opponent of communism in the region, his promotion of pan-Arabism was viewed as a threat by pro-Western states in the region. Eisenhower tried to isolate Nasser and reduce his regional influence by attempting to transform King Saud into a counterweight. Also in January, the elected Jordanian prime minister and Nasser supporter Sulayman al-Nabulsi brought Jordan into a military pact with Egypt, Syria, and Saudi Arabia. Question: Although not communist, what about Nasser concerned pro-western groups?
answer:

pan-Arabism