Guess is a synonym of Hypothesis. Hypothesis is a synonym of Possibility. Possibility is related to Chance. 
Total is a synonym of Add. Add is a type of Form. Form is related to Water. Water is related to Swim. 
Guess <--Synonym--> Hypothesis <--Synonym--> Possibility <--RelatedTo--> Chance 
Total <--Synonym--> Add --IsA--> Form <--RelatedTo--> Water <--RelatedTo--> Swim 