Extension is derived from Extend. Extensive is derived from Extension. 
one thing you do when you Surprising is Grin. one thing you do when you Surprising is Smile. Beam is a type of Smile. Beam is related to Equipment. 
Extend <--DerivedFrom-- Extension <--DerivedFrom-- Extensive 
Grin <--HasSubevent-- Surprising --HasSubevent--> Smile <--IsA-- Beam <--RelatedTo--> Equipment 