Task: Question Answering
Input (English): Cause I'm through to the third round and I've counted at least 7 who didn't make it this semester , which brings the grand total up to 11 . 11 out of 48 since last spring who've been held back , dropped out or failed out . And some how I've been left unscathed . But honestly , there were a few who didn't try . One who allegedly came to clinical with alcohol on her breath . 
Question: What may have caused only 11 to remain this semester ?
Output (English): Many of them couldn't keep up with the challenges .