Assertion: abbey | /r/HasProperty | major centre of pilgrimage
Facets:
Source sentences:
text: The bones of the Apostle Matthias were supposedly sent to Trier on the authority of the Empress Helena, mother of the Roman emperor Constantine I, but the relics were only discovered in 1127 during demolition work on the predecessor of the present church buildings, since which time the abbey has been a major centre of pilgrimage.