Assertion: city's church | /r/HasProperty | founded by helena
Facets:
Source sentences:
text: The seven churches are the four major basilicas (St Peter in Vatican, St Paul outside the Walls, St John in Lateran and Santa Maria Maggiore), while the other three are San Lorenzo fuori le mura (an Early Christian basilica), Santa Croce in Gerusalemme (a church founded by Helena, the mother of Constantine, which hosts fragments of wood attributed to the holy cross) and San Sebastiano fuori le mura (which lies on the Appian Way and is built above the Catacombs of San Sebastiano).