Bill is related to Face. Face is related to Slap. Slap is related to Palm. Palm is related to Tropical. 
Talk requires Swallow. Swallow is a type of Believe. 
Bill <--RelatedTo--> Face <--RelatedTo--> Slap <--RelatedTo--> Palm <--RelatedTo--> Tropical 
Talk --HasPrerequisite--> Swallow --IsA--> Believe 