As such we can say that a square is a  type of rectangle which is a type of shape. We can therefore pass a  square into any function that expects a shape or rectangle object  because a square is covariant with both a rectangle and a shape.
Format: Audio CD. The song Rule the World was featured in the motion picture Stardust which was released in the US this year. Although little known in the US, Take That is a top act in Europe and thing song has hit the top 10 list in the UK immediately after its release.
What a Wonderful World is a pop ballad written by Bob Thiele and George David Weiss. It was first recorded by Louis Armstrong and released in 1967 as a single, which topped the pop charts in the United Kingdom. Thiele and Weiss were both prominent in the music world. Armstrong's recording was inducted in the Grammy Hall of Fame in 1999. The publishing for this song is controlled by Memory Lane Music Group, Carlin Music Corp. and BMG Rights Management.