Complex sentence: Petit Verdot is one of the classic grapes of Bordeaux, although it probably originated further south, so the current distribution of the parents suggests the Bastardo was born somewhere in South Western France, if not on the banks of the Tarn itself.
Split into simpler sentences: Petit Verdot is one of the classic grapes of Bordeaux, although it probably originated further south. So the current distribution of the parents suggests that Bastardo was born somewhere in South Western France, if not on the banks of the Tarn itself.