Assertion: lute's string | /r/HasProperty | grouped in 5 or 6 courses
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Source sentences:
text: The oud (Arabic: عود‎ ʿūd [ʕuːd]) is a short-neck lute-type, pear-shaped stringed instrument (a chordophone in the Hornbostel-Sachs classification of instruments) with 11 or 13 strings grouped in 5 or 6 courses.