Assertion: eye chart's letter | /r/HasProperty | equivalent
Facets:
value: to 20/200
type: OTHER
value: to newsprint
type: OTHER
value: in size
type: OTHER
value: for reference purposes
type: PURPOSE
Source sentences:
text: For reference purposes, a 1M-sized letter is equivalent in size to newsprint.
text: The middle letter of the top line is equivalent to 20/200.