Does the sentence "At the Consumer Electronics Show in January 2011, it was announced that the next version of Windows would add support for ARM system-on-chips alongside the existing x86 processors produced by vendors, especially AMD and Intel." provide a valid answer to the question "Where were the Windows 8 plans initially announced?"

A: yes

Does the sentence "The use of rifles is often banned for safety reasons in areas with high population densities or limited topographic relief." provide a valid answer to the question "Why are the use of rifles banned?"

A: yes

Does the sentence "This gives them a significant cushion against the global downturn." provide a valid answer to the question "Arab countries entered the financial crisis in exceptionally strong positions giving them a cushion against this?"

A: yes

Does the sentence "The Protocol on Environmental Protection to the Antarctic Treaty (also known as the Environmental Protocol or Madrid Protocol) came into force in 1998, and is the main instrument concerned with conservation and management of biodiversity in Antarctica." provide a valid answer to the question "Besides conservation, what is the Environmental Protocol's goal to manage?"

A:
yes