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.
Album cover. We Are the World is a song and charity single originally recorded by the supergroup United Support of Artists (USA) for Africa in 1985. It was written by Michael Jackson and Lionel Richie (with arrangements by Michael Omartian) and produced by Quincy Jones for the album We Are the World.