Oppose is a synonym of Contest. Series is a type of Contest. Series is a synonym of Row. you are likely to find Row in/at/on Table. 
Trace is a synonym of Touch. Touch is a synonym of Spot. Spot is related to Bar. Bar is related to Rat. 
Oppose <--Synonym--> Contest <--IsA-- Series <--Synonym--> Row --AtLocation--> Table 
Trace <--Synonym--> Touch <--Synonym--> Spot <--RelatedTo--> Bar <--RelatedTo--> Rat 