question: OPTIONS:
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HDTV technology was introduced in the United States in the late 1980s and made official in 1993 by the Digital HDTV Grand Alliance, a group of television, electronic equipment, communications companies consisting of AT&T Bell Labs, General Instrument, Philips, Sarnoff, Thomson, Zenith and the Massachusetts Institute of Technology.
When was HDTV introduced in the US?

answer: yes

[Q]: Sentence: Rated one of the top golf courses in the nation, Southern Hills has hosted four PGA Championships, including one in 2007, and three U.S. Opens, the most recent in 2001. Question: How many PGA championships has Southern Hills held? OPTIONS:
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[A]: yes

Q: Does "Like the New York City Subway, the PATH operates 24 hours a day; meaning three of the six rapid transit systems in the world which operate on 24-hour schedules are wholly or partly in New York (the others are a portion of the Chicago 'L', the PATCO Speedline serving Philadelphia, and the Copenhagen Metro)." provide a valid answer to "How many 24-hour rapid transit systems are located in New York?"?
OPTIONS:
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A: yes

Problem: Does "To win over the tribunes, the senators gave the tribunes a great deal of power and the tribunes began to feel obligated to the senate." answer the question "How did senators attempt to gain the favor of the tribunes?" OPTIONS:
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A: yes

Does the sentence "The first organized group exhibition by Cubists took place at the Salon des Independants in Paris during the spring of 1911 in a room called 'Salle 41'; it included works by Jean Metzinger, Albert Gleizes, Fernand Leger, Robert Delaunay and Henri Le Fauconnier, yet no works by Picasso or Braque were exhibited." provide a valid answer to the question "In what city did the first exhibition of Cubists take place?" OPTIONS:
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A: yes

Does the sentence "Kievan Rus' reached its greatest extent under Yaroslav I (10191054); his sons assembled and issued its first written legal code, the Rus' Justice, shortly after his death." provide a valid answer to the question "What year was Kievan Rus became a territory?" OPTIONS:
- yes
- no

A:
no