Hard to give the correct advised not knowing what the data is, assuming that the field contain the same data i would approach like the below.
'GLE' AS Type,
(ooxml, embedded labels, table is GLE);
'ILE' As TYPE
(ooxml, embedded labels, table is ILE);
BE As Type,
(ooxml, embedded labels, table is BE);
This will give you one fact table with a type to restrict the information to the source table.
If this is not what you are after then you will need to alias all the field in the table that are not the Key.