Problem: Extract the answer to the question from the following context. Question: What makes up the majority of the pool? Context: DNA samples from 1228 Russians show that the Y chromosomes analyzed, all except 20 (1.6%) fall into seven major haplogroups all characteristic to West Eurasian populations. Taken together, they account for 95% of the total Russian Y chromosomal pool. Only (0.7%) fell into haplogroups that are specific to East and South Asian populations. Mitochondrial DNA (mtDNA) examined in Poles and Russians revealed the presence of all major European haplogroups, which were characterized by similar patterns of distribution in Poles and Russians. An analysis of the DNA did not reveal any specific combinations of unique mtDNA haplotypes and their subclusters. The DNA clearly shows that both Poles and Russians are not different from the neighbouring European populations.

A: West Eurasian

Problem: Extract the answer to the question from the following context. Question: What reaction could be mistaken for a math rule? Context: There are many important organozinc compounds. Organozinc chemistry is the science of organozinc compounds describing their physical properties, synthesis and reactions. Among important applications is the Frankland-Duppa Reaction in which an oxalate ester(ROCOCOOR) reacts with an alkyl halide R'X, zinc and hydrochloric acid to the -hydroxycarboxylic esters RR'COHCOOR, the Reformatskii reaction which converts -halo-esters and aldehydes to -hydroxy-esters, the SimmonsSmith reaction in which the carbenoid (iodomethyl)zinc iodide reacts with alkene(or alkyne) and converts them to cyclopropane, the Addition reaction of organozinc compounds to carbonyl compounds. The Barbier reaction (1899) is the zinc equivalent of the magnesium Grignard reaction and is better of the two. In presence of just about any water the formation of the organomagnesium halide will fail, whereas the Barbier reaction can even take place in water. On the downside organozincs are much less nucleophilic than Grignards, are expensive and difficult to handle. Commercially available diorganozinc compounds are dimethylzinc, diethylzinc and diphenylzinc. In one study the active organozinc compound is obtained from much cheaper organobromine precursors:

A: Addition

Problem: Extract the answer to the question from the following context. Question: A NBA team that gets their namesake from the US space program is called? Context: In the aftermath of Hurricane Katrina, the NBA's New Orleans Hornets (now the New Orleans Pelicans) temporarily relocated to the Ford Center, playing the majority of its home games there during the 200506 and 200607 seasons. The team became the first NBA franchise to play regular-season games in the state of Oklahoma.[citation needed] The team was known as the New Orleans/Oklahoma City Hornets while playing in Oklahoma City. The team ultimately returned to New Orleans full-time for the 200708 season. The Hornets played their final home game in Oklahoma City during the exhibition season on October 9, 2007 against the Houston Rockets.

A: Houston Rockets

Problem: Extract the answer to the question from the following context. Question: What type of value is the earth that has Hydrogen in it? Context: Hydrogen is highly soluble in many rare earth and transition metals and is soluble in both nanocrystalline and amorphous metals. Hydrogen solubility in metals is influenced by local distortions or impurities in the crystal lattice. These properties may be useful when hydrogen is purified by passage through hot palladium disks, but the gas's high solubility is a metallurgical problem, contributing to the embrittlement of many metals, complicating the design of pipelines and storage tanks.

A:
Hydrogen is highly soluble in many rare earth