From a Washington Post correction:
One of the poems that KidsPost published as part of its poetry contest on Tuesday was not written by the child who submitted it. The poem that appeared as “Who Am I?” was actually written by J. Patrick Lewis and published in his book “Monumental Verses.” The child who sent the poem to KidsPost said she didn’t realize that entries to the contest had to be original. But copying something that someone else wrote without giving them credit is plagiarism, and it’s wrong.
(Hat Tip: Last Call)