I'm trying to answer #12 on SQLZoo from SELECT from WORLD tutorial, (<http://sqlzoo.net/wiki/SQLZOO:SELECT_from_WORLD_Tutorial>)

It asks to "Show the name and the continent - but substitute Eurasia for Europe and Asia; substitute America - for each country in North America or South America or Caribbean. Show countries beginning with A or B"

I'm new to SQL and cant seem to figure this one out. Could someone please help explain to me how to solve this? I'm mostly getting stuck on the CASE statements and how to do multiple values for the conditions. 

Thank you in advance!