Text: In the nave, the church's famous Byzantine mosaics show, on the left, Ravenna's fortified port of Classis, from which a procession of 22 virgins follows the three Magi with gifts for Jesus on his mother's lap; on the right, from Theodoric's palace, 26 male martyrs march towards Christ.
Entailment: Classis is the name of a port in Ravenna.
Contradiction: The mosaics in the church are far away from the nave.