Boat is made of Fiber. Boat is related to Slip. Slip is related to Surface. Inside is a type of Surface. 
Should is related to Ought. Ought is related to Must. Must is related to Mark. 
Fiber <--MadeOf-- Boat <--RelatedTo--> Slip <--RelatedTo--> Surface <--IsA-- Inside 
Should <--RelatedTo--> Ought <--RelatedTo--> Must <--RelatedTo--> Mark 