['entailment']
He thanked me for a certain letter which I had written to him as a matter of fact, I had offered him a job.
הוא הודה לי על מכתב מסוים שכתבתי לו למעשה, הצעתי לו עבודה.
He thanked me for one letter in particular.
הוא הודה לי על מכתב אחד בפרט. 