['entailment']
As long as I might be thought to be pursuing him, the criminal would be off his guard. 
כל עוד יחשבו שאני רודף אחריו, הפושע לא יהיה ערני. 
The criminal was off his guard so long as he possibly imagined I was pursuing him.
הפושע היה חסר הגנה כל עוד הוא חשב שאני רודף אחריו.