Way is a type of Condition. Condition is related to Weather. Weather is related to Overall. 
Mathematics is related to Sphere. Sphere is a synonym of Orbit. Orbit is related to Year. 
Way --IsA--> Condition <--RelatedTo--> Weather <--RelatedTo--> Overall 
Mathematics <--RelatedTo--> Sphere <--Synonym--> Orbit <--RelatedTo--> Year 