Martin studied voice at Princeton University and Cincinnati University.

Entity and relation annotations:
id: 0
type: entity
value: text: Martin 
labels: <Person>
id: 1
type: entity
value: text: Princeton University
labels: <Organization>
id: 2
type: entity
value: text: Cincinnati University
labels: <Organization>
type: relation
to_id: 1
labels: Person:affiliated_with:Organization
from_id: 0
type: relation
to_id: 2
labels: Person:affiliated_with:Organization
from_id: 0