Hello,<br/><br/>I have one doubt that is in bold words.<br/><br/>Could anybody explain it?<br/><br/>How do you like to go up in a swing,<br/>Up in the air <b>so blue</b>?<br/>Oh, I do think it the pleasantest thing<br/>Ever a child can do! <br/><br/><b>"so blue" is for What?</b><br/><br/>Up in the air and over the wall,<br/>Till I can see so wide,<br/>Rivers and trees and cattle and all<br/>Over the countryside - <br/><br/>Till I look down on the garden green,<br/>Down on the roof so brown - <br/>Up in the air I go flying again,<br/>Up in the air and down!