Front is related to Introduction. Introduction is related to Meet. Meet is a type of Have. Have is related to Employ. 
Communication is related to Song. Song is related to Tune. Tune is related to Musical. Musical is related to Minor. 
Front <--RelatedTo--> Introduction <--RelatedTo--> Meet --IsA--> Have <--RelatedTo--> Employ 
Communication <--RelatedTo--> Song <--RelatedTo--> Tune <--RelatedTo--> Musical <--RelatedTo--> Minor 