Market is related to Commercial. Commercial is a type of Ad. Ad is related to Uncertainty. Uncertain is derived from Uncertainty. 
Camp is related to Fun. Laser can be used for Fun. Laser can be used for Accuracy. 
Market <--RelatedTo--> Commercial --IsA--> Ad <--RelatedTo--> Uncertainty <--DerivedFrom-- Uncertain 
Camp <--RelatedTo--> Fun <--UsedFor-- Laser --UsedFor--> Accuracy 