Return proposals for single-digit cells

Author: Marcin Kardas

sota_extractor2/models/linking/bm25_naive.py

@@ -191,7 +191,7 @@ def annotations(r, c, type='model'):
             if type in structure[nr, c]:
                 yield Value(structure[nr, c], matrix[nr, c])
 
-    number_re = re.compile(r'^[± Ee/()^0-9.%,_+-]{2,}$')
+    number_re = re.compile(r'(^[± Ee/()^0-9.%,_+-]{2,}$)|(^[0-9]$)')
 
     proposals = [Proposal(
         cell=Cell(cell_ext_id=f"{table_ext_id}/{r}.{c}",