Q: Does "It produced the Catholic-Orthodox Joint declaration of 1965, which was read out on 7 December 1965, simultaneously at a public meeting of the Second Vatican Council in Rome and at a special ceremony in Istanbul." provide a valid answer to "Who visited the Vatican in May of 1973 in an effort to negotiate Orthodox and Catholic relations?"?
A: no

Q: Does "Two major hardware revisions of the Xbox 360 have succeeded the original models; the Xbox 360 S (also referred to as the "Slim") replaced the original "Elite" and "Arcade" models in 2010." provide a valid answer to "How many major hardware revisions has the 360 had?"?
A: yes

Q: Does "Increasing the mass and cross section of copper in a coil increases the electrical energy efficiency of the motor." provide a valid answer to "What property of copper increases the efficiency of electrical motors?"?
A: no

Q: Does "Although they concede that governmental policies had some role in causing the crisis, they contend that GSE loans performed better than loans securitized by private investment banks, and performed better than some loans originated by institutions that held loans in their own portfolios." provide a valid answer to "According to reports, which loans performed better than some loans securitized by private investment banks?"?
A:
yes