Given the text within triple quotes
"""


This guarantee shall expire , upon our receipt of the certified payment certificate issued by you indicating that the contractor has made full repayment of the amount of the advance payment , or on the 30 / 08 / 2019 whichever is earlier . Consequently , any demand for payment under this guarantee must be received by us at this office on or before that date . The Bank’s liability under this guarantee shall not be affected by any change in the constitution of the contractor . The guarantee is personal to yourselves and not transferrable or assignable.
"""

Provide the results in following json format 
{
  "key": "value"
}
only for the keys in the following list 
['Guaranteeing Bank Name', 'Payment Guarantee Number', 'Guarantee Amount', 'Repayment Date', 'Account Number']

 First repeat the request without change, then give your answer.
user