Refer to the input text as context and select the correct relationship between 'Interbank' and 'financial services' from the available options.
Options: owner of, product/material produced, creator, chairperson

Mr. Stewart was once a trader at Rabobank, having since been obstructed from participating in the UK’s financial services industry on the heels of a criminal conviction for London Interbank Offered Rate (LIBOR) fraud.
product/material produced