Problem: Does "Elizabeth's personal fortune has been the subject of speculation for many years." answer the question "What has been a subject of speculation concerning Elizabeth's wealth?"

A: yes

Problem: Does "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." answer the question "Who was in charge of counties that had fewer than 10,000 people in them?"

A: yes

Problem: Does "Brasilia is known as a departing point for the practice of unpowered air sports, sports that may be practiced with hang gliding or paragliding wings." answer the question "What type of sports are popular in Brasilia?"

A:
yes