Child is a synonym of Product. Product is related to Coal. Coal is a type of Fuel. 
Present is a type of Introduce. Present is related to Bow. Bow is a type of Gesture. Gesture is related to Hand. 
Child <--Synonym--> Product <--RelatedTo--> Coal --IsA--> Fuel 
Introduce <--IsA-- Present <--RelatedTo--> Bow --IsA--> Gesture <--RelatedTo--> Hand 