The clergy was divided into two types: the secular clergy, who lived out in the world, and the regular clergy, who lived under a religious rule and were usually monks. Throughout the period monks remained a very small proportion of the population, usually less than one per cent. Most of the regular clergy were drawn from the nobility, the same social class that served as the recruiting ground for the upper levels of the secular clergy. The local parish priests were often drawn from the peasant class. Townsmen were in a somewhat unusual position, as they did not fit into the traditional three-fold division of society into nobles, clergy, and peasants. During the 12th and 13th centuries, the ranks of the townsmen expanded greatly as existing towns grew and new population centres were founded. But throughout the Middle Ages the population of the towns probably never exceeded 10 per cent of the total population.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What social class did many members of the regular clergy come from?
Ah, so.. the nobility

Although hydrides can be formed with almost all main-group elements, the number and combination of possible compounds varies widely; for example, there are over 100 binary borane hydrides known, but only one binary aluminium hydride. Binary indium hydride has not yet been identified, although larger complexes exist.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many binary aluminum hydrides are there?
Ah, so.. 1

Mexico has a large number of department stores based in Mexico, of which the most traditional are El Palacio de Hierro (High end and luxury goods) and Liverpool (Upper-middle income), with its middle income sister store Fabricas de Francia. Sanborns owns over 100 middle income level stores throughout the country. Grupo Carso operates Sears Mexico and two high-end Saks 5th Avenue stores. Other large chains are Coppel and Elektra, which offer items for the bargain price seeker. Wal-Mart operates Suburbia for lower income shoppers, along with stores under the brand names of Wal-Mart, Bodega Aurrera, and Superama.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What company isn't responsible for over 100 stores in the country? 
Ah, so..
unanswerable