SELECT pName FROM Player WHERE HS BETWEEN 500 AND 1500
What are the names of players whose training hours is between 500 and 1500?
[Schema (values) (types)]: | soccer_2 |  College : cname (text) , state (text) , enr (text) | Player : pid (text) , pname (text) , ycard (text) , hs (number) | Tryout : pid (text) , cname (text) , ppos (text) , decision (number);