Does "Education in Switzerland is very diverse because the constitution of Switzerland delegates the authority for the school system to the cantons." contain the correct answer to "Who has authority of school systems in Switzerland?"

A: yes

Does "In April 2007, Apple reported second quarter revenue of US$5.2 billion, of which 32% was made from iPod sales." contain the correct answer to "How much of Apple's revenue was generated by iPod purchases in Q2 of 2007?"

A: yes

Does "Voice compression is used in internet telephony, for example, audio compression is used for CD ripping and is decoded by the audio players." contain the correct answer to "What is used in internet telephony?"

A:
yes