Assertion: bass guitar's string | /r/HasProperty | nylon
Facets:
value: to add more
type: PURPOSE
value: usually
type: DEGREE
Source sentences:
text: The classical guitar (also called the Spanish guitar) is an acoustical wooden guitar with six strings, usually nylon, as opposed to the metal strings used in acoustic and electric guitars.
text: A less expensive alternative to gut strings is nylon strings; the higher strings are pure nylon, and the lower strings are nylon wrapped in wire, to add more mass to the string, slowing the vibration, and thus facilitating lower pitches.