Wing is part of Airplane. Wing can be used for Flying. Flying is related to Butterfly. Butterfly is related to Delicate. 
Routine is a type of Software. Echo is a type of Software. Echo is a synonym of Recall. Recall is a type of Request. 
Airplane <--PartOf-- Wing --UsedFor--> Flying <--RelatedTo--> Butterfly <--RelatedTo--> Delicate 
Routine --IsA--> Software <--IsA-- Echo <--Synonym--> Recall --IsA--> Request 