Assertion: guitar | /r/HasProperty | tuned with lower b
Facets:
value: on the added seventh string
type: LOCATION
value: frequently
type: TEMPORAL
Source sentences:
text: The 7-string guitar of today is frequently tuned with a lower B on the added seventh string (B1–E2–A2–D3–G3–B3–E4), but other common tunings exist.