Notice is related to Public. Public is related to News. News is related to Journalist. 
Line is related to Walk. one thing you do when you Walk is Talk. Talk is the opposite of Hear. 
Notice <--RelatedTo--> Public <--RelatedTo--> News <--RelatedTo--> Journalist 
Line <--RelatedTo--> Walk --HasSubevent--> Talk <--Antonym--> Hear 