Question: Y-Gerät was the most complex system of the three. It was, in effect, an automatic beam-tracking system, operated through the bomber's autopilot. The single approach beam along which the bomber tracked was monitored by a ground controller. The signals from the station were retransmitted by the bomber's equipment. This way the distance the bomber travelled along the beam could be precisely verified. Direction-finding checks also enabled the controller to keep the crew on an exact course. The crew would be ordered to drop their bombs either by issue of a code word by the ground controller, or at the conclusion of the signal transmissions which would stop. Although its maximum usable range was similar to the previous systems, it was not unknown for specific buildings to be hit.
Is there an answer to this question: Which system was the most complex of the three?

Answer: Y-Gerät


Question: Standard Dutch uses three genders to differentiate between natural gender and three when discerning grammatical gender. But for most non-Belgian speakers, the masculine and feminine genders have merged to form the common gender (de), while the neuter (het) remains distinct as before. This gender system is similar to those of most Continental Scandinavian languages. As in English, but to a lesser degree, the inflectional grammar of the language (e.g., adjective and noun endings) has simplified over time.
Is there an answer to this question: Apart from the common gender in non-Belgian Dutch, what other gender do speakers use?

Answer: neuter


Question: The chapter house was built concurrently with the east parts of the abbey under Henry III, between about 1245 and 1253. It was restored by Sir George Gilbert Scott in 1872. The entrance is approached from the east cloister walk and includes a double doorway with a large tympanum above.
Is there an answer to this question: Who restored the chapel house in 1872?

Answer: unanswerable


Question: Hard rock had been established as a mainstream genre by 1965. From the end of the 1960s, it became common to divide mainstream rock music into soft and hard rock, with both emerging as major radio formats in the US. Soft rock was often derived from folk rock, using acoustic instruments and putting more emphasis on melody and harmonies. Major artists included Barbra Streisand, Carole King, Cat Stevens, James Taylor and Bread.
Is there an answer to this question: What type of instruments were prominent in soft rock? 

Answer:
acoustic