Portugal's wine industry produces not only excellent table wines from regions like Dao, Douro, and Alentejo, but legendary port wine, which comes from the north.
Portugal's wine industry produces terrible table wines. 
mnli hypothesis: Portugal's wine industry produces terrible table wines.  premise: Portugal's wine industry produces not only excellent table wines from regions like Dao, Douro, and Alentejo, but legendary port wine, which comes from the north.