Failure is related to Ruin. Ruin is related to Tourist. Tourist is a type of Traveler. Visitor is a type of Traveler. 
Pat is related to Touch. Dig is a type of Touch. Mine entails/necessarily involves Dig. you are likely to find Human in/at/on Mine. 
Failure <--RelatedTo--> Ruin <--RelatedTo--> Tourist --IsA--> Traveler <--IsA-- Visitor 
Pat <--RelatedTo--> Touch <--IsA-- Dig <--Entails-- Mine <--AtLocation-- Human 