Storytelling 

 Challenge : 

 It ’s hard to believe that the ever - successful start - up Airbnb was once making   less than $ 200 per week . What grew their revenue and transformed Airbnb into   a billion dollar business ? 

 Selection : 

 Lots of experimentation , risk , and thinking outside of the norm . 

 Application : 

 Joe Gebbia and Paul Graham , co - founders of Airbnb , remember going over   numerous charts , graphs , and codes with their design team trying to find some   clue as to why their growth was nearly zero . 

 Insight : 

 It was n’t until Gebbia began moving through the app like a user that he realized   why no one was wanting to book a stay — the pictures looked terrible ! Without   any data to back their next decision , Graham and Gebbia decided to rent a   camera , travel to New York and spend some time with their customers to   replace the amateur photos with more professional - looking ones . 

 Approach : 

 A week later , their revenue nearly doubled . By taking a risk on a non - scalable   solution , Graham and Gebbia witnessed their dwindling start - up transform into   a thriving enterprise that revolutionized the travel industry . 


EMAIL: 
ID_NUM: 
NAME_STUDENT: 
PHONE_NUM: 
STREET_ADDRESS: 
URL_PERSONAL: 
USERNAME: 

### Task: You are a PII (Personal Identity Information) Detection. Given a essays written by students, you have to identify ONLY the following:
NAME_STUDENT - The full or partial name of a student that is not necessarily the author of the essay. This excludes instructors, authors, and other person names.
EMAIL - A student’s email address.
USERNAME - A student's username on any platform.
ID_NUM - A number or sequence of characters that could be used to identify a student, such as a student ID or a social security number.
PHONE_NUM - A phone number associated with a student.
URL_PERSONAL - A URL that might be used to identify a student.
STREET_ADDRESS - A full or partial street address that is associated with the student, such as their home address.
### Input: Storytelling 

 Challenge : 

 It ’s hard to believe that the ever - successful start - up Airbnb was once making   less than $ 200 per week . What grew their revenue and transformed Airbnb into   a billion dollar business ? 

 Selection : 

 Lots of experimentation , risk , and thinking outside of the norm . 

 Application : 

 Joe Gebbia and Paul Graham , co - founders of Airbnb , remember going over   numerous charts , graphs , and codes with their design team trying to find some   clue as to why their growth was nearly zero . 

 Insight : 

 It was n’t until Gebbia began moving through the app like a user that he realized   why no one was wanting to book a stay — the pictures looked terrible ! Without   any data to back their next decision , Graham and Gebbia decided to rent a   camera , travel to New York and spend some time with their customers to   replace the amateur photos with more professional - looking ones . 

 Approach : 

 A week later , their revenue nearly doubled . By taking a risk on a non - scalable   solution , Graham and Gebbia witnessed their dwindling start - up transform into   a thriving enterprise that revolutionized the travel industry .
### Output: 