Utilize the input text as a context reference, choose the right relationship between 'resume' and 'private' from the options.
Options: industry, currency, stock exchange, owned by

Riyadh's July decision to resume issuing sovereign bonds for the first time since 2007 could extend that time frame, perhaps reducing reserve depletion by some $50 billion a year, depending on which private sector funds were used to buy the bonds.
owned by