Mikhail Prokhorov. He is the former chairman of Polyus Gold, Russia's largest gold producer, and the former President of Onexim Group.
Mikhail Prokhorov is an erstwhile chairman of Polyus Gold.
Assess the veracity of the claim based on the provided evidence.

Claim: Mikhail Prokhorov is an erstwhile chairman of Polyus Gold.

Evidence: Mikhail Prokhorov. He is the former chairman of Polyus Gold, Russia's largest gold producer, and the former President of Onexim Group.

Options: 

 - supported

 - refuted

 - not enough information
supported
Assess the veracity of the claim based on the provided evidence.

Claim: Mikhail Prokhorov is an erstwhile chairman of Polyus Gold.

Evidence: Mikhail Prokhorov. He is the former chairman of Polyus Gold, Russia's largest gold producer, and the former President of Onexim Group.

Options: 

 - supported

 - refuted

 - not enough information
user
supported
assistant