Pretty is related to Expression. Expression is related to Dear. Dear is related to Spouse. Spouse is etymologically related to Sponsor. 
Integrate is related to Learn. Teach can cause/lead to Learn. 
Pretty <--RelatedTo--> Expression <--RelatedTo--> Dear <--RelatedTo--> Spouse --EtymologicallyRelatedTo--> Sponsor 
Integrate <--RelatedTo--> Learn <--Causes-- Teach 