you are likely to find Bridge in/at/on Mouth. you are likely to find Echo in/at/on Bridge. Echo is a type of Resemble. 
Flash is related to Light. Light is related to White. White is a synonym of Blank. 
Mouth <--AtLocation-- Bridge <--AtLocation-- Echo --IsA--> Resemble 
Flash <--RelatedTo--> Light <--RelatedTo--> White <--Synonym--> Blank 