Which sentence in the paragraph above does not contain an idiom

What sound device is used in the following excerpt from how the animals lost their tails and got them back traveling from philadelphia to medicine hat by carl sandburg

In the first line of each stanza, the author follows the pattern of a noun followed by a pair of adjectives. what is the purpose of this pattern?

Symbols readers understand the larger theme of a story one of the major the of joyce araby is the urge to escape daily like which symbol in the story contributes most to this theme and why