Question: Were both Kon-Tiki and The Life of Mammals documentaries created in the 20th century?
Sentence (from "Kon-Tiki (1950 film)"): Kon-Tiki is a Norwegian-Swedish documentary film about the Kon-Tiki expedition led by Norwegian explorer and writer Thor Heyerdahl in 1947, released in Sweden, Norway, Finland, and Denmark in 1950, followed by the United States in 1951.
Relevant evidence: Yes