In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

It originally referred to an oath taken by jurors to tell the truth , i.e. , to say what is true , what is objectively accurate or subjectively honest , or both .
It originally referred to an oath taken by jurors to tell the truth .

The 1930s ( pronounced " nineteen-thirties " , commonly abbreviated as the " Thirties " ) was a decade of the Gregorian calendar that began on January 1 , 1930 , and ended on December 31 , 1939 .
The 1930s was the decade that started on January 1 , 1930 and ended on December 31 , 1939 .

The coconut tree ( " Cocos nucifera " ) is a member of the palm tree family ( Arecaceae ) and the only known living species of the genus " Cocos " .

The coconut palm is a palm tree in the family Arecaceae ( palm family ) .