Assertion: bass's hand | /r/HasProperty | the index
Facets:
value: specifically
type: MANNER
Source sentences:
text: Guitarrón players need good left-hand strength to stop (press down the strings onto the fingerboard) the heavy strings of the instrument and a strong right hand, specifically the index, middle finger, and thumb, to pluck the thick, heavy strings (usually a metal and a nylon string).