Supplier is derived from Supply. Extend is a type of Supply. Extend is related to Make. Make is related to Explain. 
Mall is related to Center. Center is a type of Building. you are likely to find Person in/at/on Building. Rider is a type of Person. 
Supplier --DerivedFrom--> Supply <--IsA-- Extend <--RelatedTo--> Make <--RelatedTo--> Explain 
Mall <--RelatedTo--> Center --IsA--> Building <--AtLocation-- Person <--IsA-- Rider 