claim: A player-coach is unable to become a head coach.
evidence: Calamus australis , commonly known as lawyer cane , wait-a-while , or hairy mary , is a climbing palm endemic to Queensland .. Calamus. Calamus ( palm ). palm. Palm tree. endemic. endemic. Queensland. Queensland. It has numerous hooks along its leaf sheath , along its leaves , and a long `` whip-like '' flagella stretching out to 3 m long .