Spouse is related to Affair. Affair is the opposite of Loyal. Loyal is related to Dog. Dog is related to Friend. 
Reading is related to Degree. Degree is related to Angle. Angle is related to Edge. Edge is related to Line. 
Spouse <--RelatedTo--> Affair <--Antonym--> Loyal <--RelatedTo--> Dog <--RelatedTo--> Friend 
Reading <--RelatedTo--> Degree <--RelatedTo--> Angle <--RelatedTo--> Edge <--RelatedTo--> Line 