Context : Higglety Pigglety Pop! or There Must Be More to Life is a 2010 live-action/animated short film about the fictional adventures of Maurice Sendak's pet dog Jennie, based on his 1967 children's book of the same name. 
Subject : Higglety Pigglety Pop! or There Must Be More to Life 
Relation : production company
The production company responsible for Higglety Pigglety Pop! or There Must Be More to Life is what?