Assertion: knocker's history | /r/HasProperty | patchy
Facets:
value: at best
type: DEGREE
Source sentences:
text: While the exact history of the pinball knocker, and indeed the history of pinball in general, is patchy at best, some things are pretty certain.
text: While the exact history of the pinball knocker, and indeed the history of pinball in general, is patchy at best, some things are pretty certain.