Rock is related to Paper. Paper is related to Message. Request is a type of Message. Request is related to Beg. 
Unusual is derived from Usual. Unusual is a synonym of Strange. 
Rock <--RelatedTo--> Paper <--RelatedTo--> Message <--IsA-- Request <--RelatedTo--> Beg 
Usual <--DerivedFrom-- Unusual <--Synonym--> Strange 