Probable in profile metadata dates
Insert a metaDescribes with predicate="probably" and value yes when capturing a date associated with the key word "probably".
Probably dates will contain the keyword 'probably' near or next to a date.
Example of a probable date
probably 1902
<metaDescribes predicate="date">1902</metaDescribes>
<metaDescribes predicate="probably">yes</metaDescribes>