An error reported by the TurtleOntologyParser of the Protege

Hi all,

When I try to open an example.ttl ontology using Protege, the protege's
TurtleOntologyParser reports the following error:

uk.ac.manchester.cs.owl.owlapi.turtle.parser.ParseException: Encountered
" <FULLIRI>
"<http://www.example.com/ontologies/2014/6/medicine#medicine.drug_strength.strength_value>
"" at line 5950904, column 65.
Was expecting:
"." ...

Then I find the triple at line 5950904:

<http://www.example.com/ontologies/2014/6/medicine#m.0hycptl>
<http://www.example.com/ontologies/2014/6/medicine#medicine.drug_strength.strength_value>
8e-05 .

But I can't find any problems in this triple. And TurtleOntologyParser
can parse the following similar triples successfully:

......
<http://www.example.com/ontologies/2014/6/medicine#m.0hyckjg>
<http://www.example.com/ontologies/2014/6/medicine#medicine.drug_strength.strength_value>
0.03 .
<http://www.example.com/ontologies/2014/6/medicine#m.0hyckjg>
<http://www.example.com/ontologies/2014/6/medicine#medicine.drug_strength.strength_value>
20.0 .
<http://www.example.com/ontologies/2014/6/medicine#m.0hyckjg>
<http://www.example.com/ontologies/2014/6/medicine#medicine.drug_strength.strength_value>
30.0 .
<http://www.example.com/ontologies/2014/6/medicine#m.0hyckjg>
<http://www.example.com/ontologies/2014/6/medicine#medicine.drug_strength.strength_value>
3.5 .
......

When I change '8e-05' to '8.05', it can parse it successfully. But when
I change to '8e.05' or '8-05', it reports the same error.

Can anyone tell me why?

Thank you very much.

Deyan Chen