Problem: Does "Naturally occurring glass, especially the volcanic glass obsidian, has been used by many Stone Age societies across the globe for the production of sharp cutting tools and, due to its limited source areas, was extensively traded." answer the question "Obsidian is what type of glass?"

A: yes

Problem: Does "For example, the serial Japan-Korea treaties of 1905, 1907 and 1910 were protested; and they were confirmed as "already null and void" in the 1965 Treaty on Basic Relations between Japan and the Republic of Korea." answer the question "When are most of the problems created that might result in an otherwise valid treaty being rejected as a binding international agreement?"

A: no

Problem: Does "The West Campus is located about one mile (1.6 km) to the west of the Danforth Campus in Clayton, Missouri, and primarily consists of a four-story former department store building housing mostly administrative space." answer the question "What is located in the basement level of the West Campus?"

A:
no