Given the following passage  "Operating at normal power line frequencies, universal motors are often found in a range less than 1000 watts. Universal motors also formed the basis of the traditional railway traction motor in electric railways. In this application, the use of AC to power a motor originally designed to run on DC would lead to efficiency losses due to eddy current heating of their magnetic components, particularly the motor field pole-pieces that, for DC, would have used solid (un-laminated) iron and they are now rarely used.",  answer the following question. Note that the answer is present within the text.  Question: What is key in universal motors?
----
Answer: universal motors are often found in a range less than 1000 watts


Given the following passage  "By 1990, the Census Bureau included more than a dozen ethnic/racial categories on the census, reflecting not only changing social ideas about ethnicity, but the wide variety of immigrants who had come to reside in the United States due to changing historical forces and new immigration laws in the 1960s. With a changing society, more citizens have begun to press for acknowledging multiracial ancestry. The Census Bureau changed its data collection by allowing people to self-identify as more than one ethnicity. Some ethnic groups are concerned about the potential political and economic effects, as federal assistance to historically underserved groups has depended on Census data. According to the Census Bureau, as of 2002, over 75% of all African Americans had multiracial ancestries.",  answer the following question. Note that the answer is present within the text.  Question: What changes did the census make in the 1990's?
----
Answer: racial categories


Given the following passage  "Schwarzenegger drew attention and boosted his profile in the bodybuilding film Pumping Iron (1977), elements of which were dramatized; in 1991, he purchased the rights to the film, its outtakes, and associated still photography. In 1977, he also appeared in an episode of the ABC situation comedy The San Pedro Beach Bums. Schwarzenegger auditioned for the title role of The Incredible Hulk, but did not win the role because of his height. Later, Lou Ferrigno got the part of Dr. David Banner's alter ego. Schwarzenegger appeared with Kirk Douglas and Ann-Margret in the 1979 comedy The Villain. In 1980, he starred in a biographical film of the 1950s actress Jayne Mansfield as Mansfield's husband, Mickey Hargitay.",  answer the following question. Note that the answer is present within the text.  Question: Besides the release of Pumping Iron, what happened in the 78th year of the century known as the 1900's?
----
Answer:
he also appeared in an episode of the ABC situation comedy The San Pedro Beach Bums