Pain is related to Nerve. Nerve is related to Biological. Biological is a synonym of Birth. 
Prompt is a type of Ask. Ask is a synonym of Expect. Expect is related to Pregnant. 
Pain <--RelatedTo--> Nerve <--RelatedTo--> Biological <--Synonym--> Birth 
Prompt --IsA--> Ask <--Synonym--> Expect <--RelatedTo--> Pregnant 