Sign can be used for Advertising. Paper can be used for Advertising. Paper is related to Gift. Gift is a type of Acquisition. 
Block is a type of Operate. Block is related to Oil. Oil is related to Make. 
Sign --UsedFor--> Advertising <--UsedFor-- Paper <--RelatedTo--> Gift --IsA--> Acquisition 
Operate <--IsA-- Block <--RelatedTo--> Oil <--RelatedTo--> Make 