Assertion: keyboard instrument's string | /r/HasProperty | tuned to specific pitch
Facets:
Source sentences:
text: The strings are attached to pegs or posts at the end of the neck, which have some type of turning mechanism to enable the player to tighten the tension on the string or loosen the tension before playing (which respectively raise or lower the pitch of a string), so that each string is tuned to a specific pitch (or note).