question: What happened in 1976 that impacted this primate 's classification as Endanger ?
answer: over 800 cotton-top tamarins were imported into the United States
turker_answer: In 1976 over 800 cotton-top tamarins were imported into the United States which impacted this primate 's classification as endangered .
rule-based: In 1976 that impacted this primate 's classification as Endanger over 800 cotton-top tamarins were imported into the United States .