Child can be used for Teaching. Teaching is a synonym of Instruction. Instruction is related to Rule. Rule is related to Presidency. 
Marble is related to Eye. Eye is related to Hand. 
Child --UsedFor--> Teaching <--Synonym--> Instruction <--RelatedTo--> Rule <--RelatedTo--> Presidency 
Marble <--RelatedTo--> Eye <--RelatedTo--> Hand 