Protest is related to Movement. Movement is related to Passage. Passage is a synonym of Passing. 
Steam is related to Temperature. Temperature is a synonym of Fever. Fever can cause/lead to Headache. 
Protest <--RelatedTo--> Movement <--RelatedTo--> Passage <--Synonym--> Passing 
Steam <--RelatedTo--> Temperature <--Synonym--> Fever --Causes--> Headache 