Wikipedia entity: List of dangerous snakes
Topics: medical statistics; venomous species; mortality rate
Original sentence: Envenomation rate among this species is very high and the untreated mortality is 70%, although even with antivenom and mechanical ventilation the mortality rate is at 50%.
Quantified sentence: Envenomation rate among this species is very high and the untreated mortality is 70%, although even with antivenom and mechanical ventilation the mortality rate is at moderate level.
Quantifier: moderate
Percentage: 50%
Specificity: partially