Uncertain in profile metadata dates
Insert a metaDescribes with predicate="uncertain"
and value yes when capturing a dates that are uncertain or questionable.
Uncertain dates will contain a question mark next to a date.
Example of a 'uncertain' date
?1779
<metaDescribes predicate="date">1779</metaDescribes>
<metaDescribes predicate="uncertain">yes</metaDescribes>