instruction:
In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
question:
Chukchi Sea is a marginal sea of the Arctic Ocean .
answer:
Chukchi Sea ( Russian : , ) , sometimes referred to as the Chukotsk Sea or the Sea of Chukotsk , is a marginal sea of the Arctic Ocean .


question:
The Open Database License ( ODbL ) is a copyright license for sharing database contents .
answer:
The Open Database License ( ODbL ) is a copyleft ( " share alike " ) license agreement intended to allow users to freely share , modify , and use a database while maintaining this same freedom for others .


question:
A Mercury-arc rectifier is a type of rectifier used for converting alternating current ( AC ) to direct current ( DC ) .
answer:

A mercury-arc valve or mercury-vapor rectifier or ( UK ) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current ( AC ) into direct current ( DC ) .