Hello I am trying to call the current time in SPARQL Protege to run this query
SELECT ?patient ?pid ?note ?symptom ?duration
?patient :PID ?pid.
?patient :hasFeltSymptom ?symptom.
?patient :hasNotedDate ?note.
bind( NOW() as ?now)
bind( ?note as ?noted )
bind( year(?now)-year(?noted) as ?duration )
yet I got error with the now function
any one can help please