Wound is related to Trauma. Trauma is related to Burn. Burn is related to Lighting. 
Woman is related to Old. Politician can be Old. Politician is a type of Worker. Astronomer is a type of Worker. 
Wound <--RelatedTo--> Trauma <--RelatedTo--> Burn <--RelatedTo--> Lighting 
Woman <--RelatedTo--> Old <--HasProperty-- Politician --IsA--> Worker <--IsA-- Astronomer 