Problem: Does "Since 1900, classical periods have been reckoned more by calendar century than by particular stylistic movements that have become fragmented and difficult to define." answer the question "How have periods been reckoned Since 1900?"

A: yes

Problem: Does "Most browsers can display images, audio, video, and XML files, and often have plug-ins to support Flash applications and Java applets." answer the question "Browsers typically have plug-ins to support what?"

A: yes

Problem: Does "Days before Kerry announced Edwards as his running mate, Kerry gave a short list of three candidates: Sen John Edwards, Rep Dick Gephardt, and Gov Tom Vilsack." answer the question "How many candidates did John Kerry name as potential prospects to be his running mate?"

A:
yes