Senator is a type of Legislator. Legislator is a synonym of Lawmaker. Lawmaker is related to Judge. you are likely to find Judge in/at/on Courtroom. 
Drift is a synonym of Movement. Movement is related to Rub. 
Senator --IsA--> Legislator <--Synonym--> Lawmaker <--RelatedTo--> Judge --AtLocation--> Courtroom 
Drift <--Synonym--> Movement <--RelatedTo--> Rub 