Q: Does "The main focus was in the Balkans where the South Slavs had been ruled for centuries by other empires: the Byzantine Empire, Austria-Hungary, the Ottoman Empire, and Venice." provide a valid answer to "Where was the main focus of Pan-Slavism?"?
A: yes

Q: Does "In contrast, New York City also has neighborhoods that are less densely populated and feature free-standing dwellings." provide a valid answer to "In what borough is the Riverdale neighborhood located?"?
A: no

Q: Does "Say My Name" won the Best R&B Performance by a Duo or Group with Vocals and the Best R&B Song at the 43rd Annual Grammy Awards." provide a valid answer to "For which song, did Destiny's Child take home the grammy award for best R&B performance?"?
A: no

Q: Does "Additionally, the Federal Supreme Court has ruled that, following ratification and entry into force, a treaty must be incorporated into domestic law by means of a presidential decree published in the federal register in order to be valid in Brazil and applicable by the Brazilian authorities." provide a valid answer to "In order for a treaty to be valid in Brazil, a presidential decree incorporating the treaty into domestic law must be published where in order to be valid?"?
A:
yes