Does the sentence "Plasterwork ceilings, carved wood, and bold schemes of wallpaint formed a backdrop to increasingly rich collections of furniture, paintings, porcelain, mirrors, and objets d'art of all kinds." provide a valid answer to the question "What type of ceilings became commonplace?"

A: yes

Does the sentence "Recent research from 2006 examines the gradual development of industry and further development of shipping in a predominantly agricultural economy, calculating an average rate of per capita GDP growth between 1833 and 1911 that was only slightly lower than that of the other Western European nations." provide a valid answer to the question "What does recent research from 2006 examine?"

A: no

Does the sentence "After negotiations, the heqin agreement in 198 BC nominally held the leaders of the Xiongnu and the Han as equal partners in a royal marriage alliance, but the Han were forced to send large amounts of tribute items such as silk clothes, food, and wine to the Xiongnu." provide a valid answer to the question "In what year were Han forces defeated in Baideng?"

A: no

Does the sentence "In championship matches, this means that, unlike one-on-one matches (where the champion can simply disqualify themselves or get themselves counted out to retain the title via the "champion's advantag"), the champion does not have to be pinned or involved in the decision to lose the championship." provide a valid answer to the question "How can a champion lose a championship?"

A:
yes