
### Instruction:
Bob originally had 20 pencils.   4 of the pencils broke.  How many pencils does Bob now have?
### Response:
Bob has 16 unbroken pencils.
<|EOT|>
<｜begin▁of▁sentence｜>
### Instruction:
I've always found those kinds of arithmetic exercises funny. Please write a short story where someone named Bob actually has 20 pencils for a sensible reason, and four of them break.