Identify and extract information matching the following schema.
Return data as a JSON object. 
For each field, select most suitable value from text
If provided text does not contain sufficient information to fill out the field, make the field empty string.
Output only JSON, and output only four fields. 

{
    "full_name": "name of the person",
    "company_name": "name of the company",
    "address": "address of the plance",
    "phone_number": "phone number"
}