Does "Aided by chemical experimentation, naturalists such as Scotland's John Walker, Sweden's Torbern Bergman, and Germany's Abraham Werner created comprehensive classification systems for rocks and mineralsa collective achievement that transformed geology into a cutting edge field by the end of the eighteenth century." contain the correct answer to "In the 18th century, what changed geology drastically?"

A: yes

Does "The central part of the Sahara is hyperarid, with little to no vegetation." contain the correct answer to "How often does the Sahara go without rainfall?"

A: no

Does "The economy of Utrecht depends for a large part on the several large institutions located in the city." contain the correct answer to "what is centered in Utrecht"

A:
no