Problem: Does "Upon visiting a demonstration of MUSE in Washington, US President Ronald Reagan was impressed and officially declared it "a matter of national interest" to introduce HDTV to the US." answer the question "Which president declared it "a matter of national interest" to introduce HDTV to the US?"

A: yes

Problem: Does "Cubism and modern European art was introduced into the United States at the now legendary 1913 Armory Show in New York City, which then traveled to Chicago and Boston." answer the question "In what city did the show that introduced Cubism to the USA take place?"

A: yes

Problem: Does "A notable political union of the 20th century that covered most South Slavs was Yugoslavia, but it ultimately broke apart in the 1990s along with the Soviet Union." answer the question "What notable political union of the 20th century covered most South Slavs?"

A:
yes