Does the sentence "A 2006 study done by Cornell researchers, the Center for Chinese Agricultural Policy and the Chinese Academy of Science on Bt" provide a valid answer to the question "In what year did a research study find that the use of Bt toxin plants failed to be effective after 7 years?"

A: yes

Does the sentence "If an rms current I is delivered to the terminals of an antenna, then a power of I2Rr will be radiated and a power of I2Rloss will be lost as heat." provide a valid answer to the question "What is the single factor that can be precisely measured?"

A: no

Does the sentence "However Athens had now lost her political freedom and Hellenistic philosophy is a reflection of this new difficult period." provide a valid answer to the question "What does apatheia mean?"

A: no

Does the sentence "As of 2000, the Festival of Caricatures and Aphorisms has been held as part of Strumica's Carnival celebrations." provide a valid answer to the question "What year was the Festival of Caricatures and Aphorisms added to Strumica's Carnival celebrations?"

A:
yes