Shooting is related to Bullet. Bullet is related to Tip. 
Physical is related to Sign. Sign is related to Shape. Wire can be used for Shape. Wire is related to Cord. 
Shooting <--RelatedTo--> Bullet <--RelatedTo--> Tip 
Physical <--RelatedTo--> Sign <--RelatedTo--> Shape <--UsedFor-- Wire <--RelatedTo--> Cord 