Putnam was a signatory to the Taxpayer Protection Pledge.

Entity and relation annotations:
id: 0
type: entity
value: text: Putnam
labels: <Person>
id: 1
type: entity
value: text: the Taxpayer Protection Pledge
labels: <Regulation>
id: 2
type: entity
value: text: signatory
labels: <Title>
type: relation
to_id: 1
labels: Person:supports:Regulation
from_id: 0
type: relation
to_id: 2
labels: Person:holds_title:Title
from_id: 0