Assertion: flute's key | /r/HasProperty | pressed
Facets:
Source sentences:
text: Keyboard instruments are any instruments that are played with a musical keyboard, which is a row of small keys that can be pressed.
text: When more than one key is to be trilled, the keys should be pressed and released simultaneously.
text: When a key is pressed the keyboard creates a "note on" message.
text: This message consists of two pieces of information: which key was pressed (called "note") and how fast it was pressed (called "velocity").
text: When a key is pressed, it sends its associated hammer into motion, accelerating it toward the string.