Backyard is derived from Yard. you are likely to find Dog in/at/on Backyard. 
Train is related to Chief. Chief is related to Site. Channel is a type of Site. Gut is a type of Channel. 
Yard <--DerivedFrom-- Backyard <--AtLocation-- Dog 
Train <--RelatedTo--> Chief <--RelatedTo--> Site <--IsA-- Channel <--IsA-- Gut 