Marry is related to Relationship. Relationship is related to Sister. Sister is related to Other. Other is related to Represent. 
Sick is related to Hospital. Hospital is related to Surgery. 
Marry <--RelatedTo--> Relationship <--RelatedTo--> Sister <--RelatedTo--> Other <--RelatedTo--> Represent 
Sick <--RelatedTo--> Hospital <--RelatedTo--> Surgery 