Aunt is related to Sister. Sister is related to Female. Female is related to Son. 
Refer is related to Regard. Regard is related to Thought. Thought is related to Cognitive. 
Aunt <--RelatedTo--> Sister <--RelatedTo--> Female <--RelatedTo--> Son 
Refer <--RelatedTo--> Regard <--RelatedTo--> Thought <--RelatedTo--> Cognitive 