question: What kind of proof is acceptable for participation in auctions ?
answer: public debt of member states , but a fairly wide range of private banking securities are also accepted
turker_answer: Public debt of member states is an acceptable proof for participation in auctions , but a fairly wide range of private banking securities are also accepted .
rule-based: Acceptable for participation in auctions is public debt of member states , but a fairly wide range of private banking securities are also accepted .