you are likely to find Pollution in/at/on Lawn. Pollution is a type of Danger. Danger is related to State. 
Venture is a synonym of Adventure. Life is a type of Adventure. Lifetime is derived from Life. 
Lawn <--AtLocation-- Pollution --IsA--> Danger <--RelatedTo--> State 
Venture <--Synonym--> Adventure <--IsA-- Life <--DerivedFrom-- Lifetime 