Question: Who was a famous Persian Sufi who lived in the 11th century in Herat who's works refer to a particularly important group of God's saints?
Sentence (from "Mahmoud Shabestari"): Mahmoūd Shabestarī (1288–1340) (Persian: محمود شبستری‎ ‎ ) is one of the most celebrated Persian Sufi poets of the 14th century.
Relevant evidence: No