Guide is related to Leading. Leading is related to Chief. Chief is related to Like. Like is related to Heat. 
Sky is related to Drop. Drop is related to Purpose. Purpose is related to Motivation. 
Guide <--RelatedTo--> Leading <--RelatedTo--> Chief <--RelatedTo--> Like <--RelatedTo--> Heat 
Sky <--RelatedTo--> Drop <--RelatedTo--> Purpose <--RelatedTo--> Motivation 