Squad is related to Unit. Unit is related to Song. Song is related to Let. Let is related to Live. 
Sir is related to Dear. Dear is related to Title. Title is related to Appoint. Pack is a type of Appoint. 
Squad <--RelatedTo--> Unit <--RelatedTo--> Song <--RelatedTo--> Let <--RelatedTo--> Live 
Sir <--RelatedTo--> Dear <--RelatedTo--> Title <--RelatedTo--> Appoint <--IsA-- Pack 