you are likely to find Knife in/at/on Pocket. Pocket is a synonym of Bunch. Bunch is related to Word. Word is part of Phrase. 
Tank is a type of Weapon. Weapon can be used for Kill. Kill is related to Attack. 
Knife --AtLocation--> Pocket <--Synonym--> Bunch <--RelatedTo--> Word --PartOf--> Phrase 
Tank --IsA--> Weapon --UsedFor--> Kill <--RelatedTo--> Attack 