Does "In 1919 Father James Burns became president of Notre Dame, and in three years he produced an academic revolution that brought the school up to national standards by adopting the elective system and moving away from the university's traditional scholastic and classical emphasis." contain the correct answer to "Over how many years did the change to national standards undertaken at Notre Dame in the early 20th century take place?"

A: yes

Does "This was in spite of some carbon microphones used, which had resonances that colored the recorded tone." contain the correct answer to "At at time was radio gaining popularity?"

A: no

Does "After the Northern Xiongnu fled into the Ili River valley in AD 91, the nomadic Xianbei occupied the area from the borders of the Buyeo Kingdom in Manchuria to the Ili River of the Wusun people." contain the correct answer to "Where did the Northern Xiongnu flee to in AD 91?"

A:
yes