Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Q: Context: The Queen's Royal Irish Hussars, abbreviated as QRIH, was a cavalry regiment of the British Army formed from the amalgamation of the 4th Queen's Own Hussars and the 8th King's Royal Irish Hussars in Hohne, West Germany in 1958. 
 Question: What military branch did Queen's Royal Irish Hussars serve?

A: british army
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Q: Context: Change in gene expression associated with pancreatic cancer could be attributed to the variation in histone posttranslational modifications leading to subsequent remodeling of the chromatin template during transcription. However, the interconnected network of molecules involved in regulating such processes remains elusive. hPaf1/PD2, a subunit of the human PAF-complex, involved in the regulation of transcriptional elongation has oncogenic potential. Our study explores the possibility that regulation of histone methylation by hPaf1 can contribute towards alteration in gene expression by nucleosomal rearrangement. Here, we show that knockdown of hPaf1/PD2 leads to decreased di- and tri-methylation at histone H3 lysine 4 residues in pancreatic cancer cells. Interestingly, hPaf1/PD2 colocalizes with MLL1 (Mixed Lineage Leukemia 1), a histone methyltransferase that methylates H3K4 residues. Also, a reduction in hPaf1 level resulted in reduced MLL1 expression and a corresponding decrease in the level of CHD1 (Chromohelicase DNA-binding protein 1), an ATPase dependent chromatin remodeling enzyme that specifically binds to H3K4 di and trimethyl marks. hPaf1/PD2 was also found to interact and colocalize with CHD1 in both cytoplasmic and nuclear extracts of pancreatic cancer cells. Further, reduced level of CHD1 localization in the nucleus in hPaf1/PD2 Knockdown cells could be rescued by ectopic expression of hPaf1/PD2. Micrococcal nuclease digestion showed an altered chromatin structure in hPaf1/PD2-KD cells. Overall, our results suggest that hPaf1/PD2 in association with MLL1 regulates methylation of H3K4 residues, as well as interacts and regulates nuclear shuttling of chromatin remodeling protein CHD1, facilitating its function in pancreatic cancer cells. 
 Question: Which is the histone residue methylated by MLL1?

A: h3k4
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Q: Context: Does everyone want a challenging job? In spite of all the attention focused by the media, academicians, and social scientists on human potential and the needs of individuals, there is no evidence to support that the vast majority of workers want challenging jobs. Some individuals prefer highly complex and challenging jobs; others develop in simple, routine work. The individual-difference variable that seems to gain the greatest support for explaining who prefers a challenging job and who doesn't is the strength of an individual's needs for personal growth and self-direction at work. Individuals with these higher-order growth needs are more responsive for challenging work. What percentage of ordinary workers actually desire higher-order need satisfactions and will respond positively to challenging jobs? No current data is available, but a study from the 1970s estimated the figure at about 15%. Even after adjusting for changing work attitudes and the growth in white-collar jobs, it seems unlikely that the number today exceeds 40%. The strongest voice advocating challenging jobs has not been workers--it's been professors, social science researchers, and media people. Professors, researchers, and journalists undoubtedly made their career choices, to some degree, because they wanted jobs that gave them autonomy, recognition and challenge. That, of course, is their choice. But for them, to force their needs onto the workforce in general is presumptuous . Not every employee is looking for a challenging job. Many workers meet their higher-order need off the job. There are 168 hours in every individual's week. Work rarely consumes more than 30% of this time. That leaves considerable opportunities, even for individuals with strong growth needs, to find higher-order need satisfaction outside the workplace. So don't feel you have a responsibility to create challenging jobs for all your employees. For many people, work is something that will never excite or challenge them. And they don't expect to find their growth opportunities at work. Work is merely something they have to do to pay their bills. They can find challenges outside of work on the golf course, fishing, at their local pub, with their friends in social clubs, with their family, and the like. 
 Question: What makes people choose challenging jobs?

A:
higher-order growth needs.
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