Tear is related to Cut. Laser can be used for Cut. Laser is related to Beam. Beam is related to Straight. 
Plot is related to Main. Main is related to Part. Turn is a type of Part. 
Tear <--RelatedTo--> Cut <--UsedFor-- Laser <--RelatedTo--> Beam <--RelatedTo--> Straight 
Plot <--RelatedTo--> Main <--RelatedTo--> Part <--IsA-- Turn 