Lewin was a personal friend of Federico Cantu Rufino Tamayo and David Alfaro Siqueiros.

Entity and relation annotations:
id: 0
type: entity
value: text: Lewin
labels: <Person>
id: 1
type: entity
value: text: Federico Cantu Rufino Tamayo
labels: <Person>
id: 2
type: entity
value: text: David Alfaro Siqueiros
labels: <Person>