ti-lo
There are many "faculty" entries with a sentence instead of a value, please check the real "faculty" (see wiki or taginfo)
https://taginfo.openstreetmap.org/tags/faculty=Facultad%20de%20Ciencias%2C%20UNAM
https://taginfo.openstreetmap.org/tags/faculty=Facultad%20de%20Qu%C3%ADmica%2C%20UNAM