a sperm cell is a kind of sex cell
human_sperm_cell is human_gametes. sperm_cell is not gamete. human_sperm_cell is sperm_cell. human_sperm_cell is not sperm_cell. embryonic_cell is cell. sperm_cell is animal_or_body_part. sperm_cell is not animal_gamete. sperm_cell is not animal_or_body_part. sperm_cell is animal_gamete. sperm_cell is gamete.