Question: I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "W 122nd Street Seminary Row runs three blocks (1,500 feet (460 m)) west from the intersection of Amsterdam Avenue (Tenth Avenue) and terminates at the intersection of Riverside Drive. East of Amsterdam, Seminary Row bends south along Morningside Park and is resigned as Morningside Drive (Ninth Avenue). Seminary row runs in Morningside Heights, the district surrounding Columbia University, and crosses portions of Broadway and Claremont Avenue."?
Answer:
Large solid pieces of hard material, such as rock with flat surfaces on each side are called?