In GrailQA preprocess_SP, something wrong happen in revise_only_name() function

It seems that sparql_executor get_label function cannot find one of the query s_expression so
except urllib.error.URLError:
print(query)
#exit(0)
return None

I change the exit(0) to return None , Have you met the problem?

Start by reproducing the problem in GrailQA preprocess_SP and trace revise_only_name() into sparql_executor.get_label(). Check the reported s_expression and the urllib.error.URLError path. Done means the failure is understood and the intended handling of an unresolved query is confirmed with a reproducible result.

Written by the indexing model from the issue text.