Assertion: iron | /r/HasProperty | differentiated by number
Facets:
value: from 1
type: OTHER
value: customarily
type: MANNER
Source sentences:
text: Irons are customarily differentiated by a number from 1 to 10 (most commonly 3 to 9) that indicates the relative angle of loft on the clubface, although a set of irons will also vary in clubhead size, shaft length, and hence lie angle as the loft (and number) increase.