Instruction: Tell me whether these golfers are right-handed or left-handed: Phil Mickelson, Sergio Garcia, Bubba Watson, Kevin Na, Carlos Ortiz, Brooks Koepka

Response: Phil Mickelson: Left-handed
Sergio Garcia: Right-handed
Bubba Watson: Left-handed
Kevin Na: Right-handed
Carlos Ortiz: Right-handed
Brooks Koepka: Right-handed