Q: Does "The most familiar, and historically the oldest, types of glass are "silicate glasses" based on the chemical compound silica (silicon dioxide, or quartz), the primary constituent of sand." provide a valid answer to "What types of glass is the word commonly used to mean?"?
A: yes

Q: Does "Green and the CPI further noted another exploit of the ESA in their discussion of the critically endangered cotton-top tamarin (Saguinus oedipus)." provide a valid answer to "What happened in 1976 that impacted this primate's classification as Endanger?"?
A: no

Q: Does "Wood is a heterogeneous, hygroscopic, cellular and anisotropic material." provide a valid answer to "What does wood consist of?"?
A: no

Q: Does "Data from Nielsen SoundScan, a music-sales tracking service, showed that of the 47 million CDs sold by Idol contestants through January 2010, 85 percent were by contestants with ties to the American South." provide a valid answer to "In the same study, how much more likely was someone from Kentucky to tune into the show?"?
A:
no