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.

The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel , informally called the Nobel Prize in Economics , is a prize awarded each year for outstanding contributions in the field of economics .
The Nobel Memorial Prize in Economic Sciences , officially known as The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel ( Swedish : " Sveriges riksbanks pris i ekonomisk vetenskap till Alfred Nobels minne " ) , is awarded annually by the Royal Swedish Academy of Sciences to researchers in the field of economic sciences .

Xu Chongde ( 15 January 1929 – 3 March 2014 ) was a Chinese legal expert , professor and political scientist .
Xu Chongde ( 15 January 1929 – 3 March 2014 ) was a well-known legal expert and professor , political scientist , and the member of the Communist Party of China in the People 's Republic of China .

In marine sediments methane is produced when sulfates are low .

In marine sediments the biological production of methane , also termed methanogenesis , is generally confined to where sulfates are depleted , below the top layers .

