Assertion: guitar's course | /r/HasProperty | each strung
Facets:
value: in unison
type: MANNER
Source sentences:
text: During the Renaissance period (c. 1400–1600 CE), the European guitar generally had four courses, each strung with two gut strings, and the pair of strings within each course tuned in unison.
text: The reason is that the baroque guitar used courses, which are two strings close together (in unison), that are plucked together.