Match OBS services with corresponding examples: A standby letter of credit provided by the bank on behalf of a U.S.-based firm purchasing a gas turbine from a Swiss manufacturer, with the bank making payment only in the event that the U.S. firm fails to. A credit card limit provided by the bank that has been fully drawn down and used by the card holder. A credit derivative provided by the bank to a hedge fund, whereby the bank will make a compensation payment to the holder if the Greek government defaults on their debt. An underwriting agreement obliging a bank to buy unsubscribed shares of the company at the IPO. A performance bond provided by the bank to UNSW on behalf of a construction firm bidding to upgrade student learning spaces around the Quadrangle