SELECT id ,  market_share FROM browser WHERE name  =  'Safari'
What is the id and market share of the browser Safari?
[Schema (values) (types)]: | browser_web |  Web_client_accelerator : id (text) , name (number) , operating_system (text) , client (text) , connection (text) | browser : id (text) , name (number) , market_share (text) | accelerator_compatible_browser : accelerator_id (text) , browser_id (number) , compatible_since_year (text);