Child is related to Person. Innocent is a type of Person. Innocent is a synonym of Pure. 
Puzzle is a type of Picture. Still is a type of Picture. Remember requires Still. one thing you do when you Remember is Revelation. 
Child <--RelatedTo--> Person <--IsA-- Innocent <--Synonym--> Pure 
Puzzle --IsA--> Picture <--IsA-- Still <--HasPrerequisite-- Remember --HasSubevent--> Revelation 