Sentence:  The singer simply matches the poem to a mode ; for example , the mode of bravery to this anonymous folk poem : `` They brought me news that Spring is in the plains And Ahmad 's blood the crimson tulip stains ; Go , <WSD>tell</WSD> his aged mother that her son Fought with a thousand foes , and he was one '' . 
Meaning of the word marked with <WSD> tags:  let something be known