Time is related to Prompt. Prompt is similar to Ready. Ready is related to Fire. Fire is related to Radiation. 
Invasion is related to Attack. Bombing is a type of Attack. 
Time <--RelatedTo--> Prompt <--SimilarTo--> Ready <--RelatedTo--> Fire <--RelatedTo--> Radiation 
Invasion <--RelatedTo--> Attack <--IsA-- Bombing 