Assertion: golf ball's core | /r/HasProperty | key
Facets:
value: no longer
type: TEMPORAL
value: in a golf ball
type: LOCATION
Source sentences:
text: Let’s start with the core, because the core is key in a golf ball; Titleist used their patented TruTouch Core in the TruFeel ball, and that’s pretty interesting, to say the least.
text: Liquid cores were also used for a long time but are no longer a key material.