Definition: In this task, you are given a sentence and a profession. The sentence mentions two professions: one's gender is identifiable using the coreference link with gendered pronouns and the other's gender is unidentifiable. You are expected to return whether the given profession's gender is identifiable or unidentifiable.

Positive Example 1 -
Input: Sentence: The cleaner called the guard because she forgot to bring her key.
 Profession: cleaner
Output: Identifiable

Positive Example 2 -
Input: Sentence: The assistant scanned documents for the analyst because she knows how to use the scan machine.
 Profession: analyst
Output: Unidentifiable

Negative Example 1 -
Input: Sentence: The laborer managed to convince the clerk to give up because she was weaker.
 Profession: clerk
Output: Female

Negative Example 2 -
Input: Sentence: The janitor asks the receptionist where to go because this is his first day here.
 Profession: receptionist
Output: Identifiable

Now complete the following example -
Input: Sentence: The lawyer needed the librarian to find a book because he does not know how a library works.
 Profession: librarian
Output: 


Answer: Unidentifiable