Some people make a pilgrimage to Colmar with the sole purpose of visiting the great Musee d'Unterlinden.
No one who travels to Colmar ever visits the Musee d'Unterlinden. 
mnli hypothesis: No one who travels to Colmar ever visits the Musee d'Unterlinden.  premise: Some people make a pilgrimage to Colmar with the sole purpose of visiting the great Musee d'Unterlinden.