Sentence:  In 1707 an earthquake in <WSD>Japan</WSD> generated waves so huge that they piled into the Inland Sea ; one wave swamped more than 1000 ships and boats in Osaka Bay . 
Meaning of the word marked with <WSD> tags:  a string of more than 3,000 islands to the east of Asia extending 1,300 miles between the Sea of Japan and the western Pacific Ocean