Verwenden Sie „rareness“ in einem Satz

1. Wolf brimmed with confidence as he recapped their activities of the past month and seemed more concerned with the rareness of the roast beef on offer than he was of any flaws in the operation to date

2. Now he elaborates the rareness of this vision

3. "This letter interested me deeply, because the chief difficulty in the study of catalepsy is the rareness of the disease