Does the sentence "The head of a large county of about 10,000 households was called a Prefect, while the heads of smaller counties were called Chiefs, and both could be referred to as Magistrates." provide a valid answer to the question "What Emperor initially created the quota system?"

A: no

Does the sentence "The tools are believed to have been used by early humans to harvest marine resources like clams and oysters." provide a valid answer to the question "What were the tools believed to have been used for by early humans?"

A: yes

Does the sentence "Two serious medical conditions particularly affecting dogs are pyometra, affecting unspayed females of all types and ages, and bloat, which affects the larger breeds or deep-chested dogs." provide a valid answer to the question "What are all dogs susceptible to?"

A: no

Does the sentence "Native Mahayana Buddhism is practiced today in China, Japan, Korea, Singapore, parts of Russia and most of Vietnam (also commonly referred to as "Eastern Buddhism")." provide a valid answer to the question "The Buddhism practiced in Tibet, the Himalayan regions and Mongolia are often referred to as?"

A:
no