In his last years he worked on "Monopoly Capital" with Sweezy.

Entity and relation annotations:
id: 0
type: entity
value: text: Sweezy
labels: <Person>
id: 1
type: entity
value: text: "Monopoly Capital"
labels: <Work_of_art>
type: relation
to_id: 1
labels: Person:creates:Work_of_art
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