Error while parsing sample file

[gsvijayraajaa]

Hi,

I get the following error:

$ python tablinker.py
INFO:root:Reading configuration file
INFO:root:Found 1 files to convert.
INFO:root:Starting TabLinker for ../input/simple_marked.xls
INFO:TabLinker:Starting TabLinker for all sheets in workbook
INFO:TabLinker:Parsing 15 rows and 5 columns.
Traceback (most recent call last):
File "tablinker.py", line 776, in
tLinker.doLink()
File "tablinker.py", line 160, in doLink
self.parseSheet()
File "tablinker.py", line 414, in parseSheet
self.parseData(i, j)
File "tablinker.py", line 671, in parseData
dim_qname))
File "/usr/local/lib/python2.7/dist-packages/rdflib-4.1.1-py2.7.egg/rdflib/graph.py", line 1316, in add
_assertnode(s,p,o)
File "/usr/local/lib/python2.7/dist-packages/rdflib-4.1.1-py2.7.egg/rdflib/graph.py", line 1903, in _assertnode
'Term %s must be an rdflib term' % (t,)
AssertionError: Term Table_1/a/Fabricage_van_aardewerk must be an rdflib term

Kindly help me out.