Assertion: male's sperm | /r/AtLocation | testis
Facets:
Source sentences:
text: Sperm are produced in the testes and stored in the attached epididymis.
text: Sperm is produced in the testes in little vessels called seminiferous tubules, and they mature in the vas deferens in a process that takes up to 74 days and requires a slightly cooler environment than body temperature.