I'd rather teach you its correct use than detain you. I wasn't rude about your misunderstanding, was I? It just seemed odd that your spelling was so good but your punctuation unsure.
For the record, it either indicates possession (except when its, as in the lion showed its anger) or it indicates a missing letter (as in the i of is). This is clearly not the case with Notts or Northants.
No offence intended.