knows how to play the piano
He knows how to play the piano.
She knows how to play the piano.
Tom no sabe tocar el piano.
Tom can't play the piano.
¿Tom sabe tocar el piano?
Can Tom play the piano?
¿El que sabe tocar el piano es capaz de tocar el teclado?
Can someone who knows how to play the piano play the keyboard?
Does he know how to play the piano?
Tras un año de práctica, ella apenas sabe tocar el piano.
After a year of practice, she barely knows how to play the piano.
Él sabe tocar el piano mejor que yo.
He can play the piano better than I can.