Deadly is related to Sin. Sin is related to Evil. Evil is the opposite of Positive. 
Predict is a type of Guess. Guess is a synonym of Calculation. Calculation is related to Degree. 
Deadly <--RelatedTo--> Sin <--RelatedTo--> Evil <--Antonym--> Positive 
Predict --IsA--> Guess <--Synonym--> Calculation <--RelatedTo--> Degree 