Peaceful is related to Protest. Protest is related to Pro. Pro is related to Produce. Produce is related to Farm. 
Song is related to Singer. you are likely to find Singer in/at/on Concert. Concert is related to Musical. 
Peaceful <--RelatedTo--> Protest <--RelatedTo--> Pro <--RelatedTo--> Produce <--RelatedTo--> Farm 
Song <--RelatedTo--> Singer --AtLocation--> Concert <--RelatedTo--> Musical 