Identify which animal species is alive or extinct: Polacanthus, Olive Ridley Turtle
Olive Ridley Turtle is alive, Polacanthus is extinct.
### Instruction: Identify which animal species is alive or extinct: Polacanthus, Olive Ridley Turtle
### Context: 
### Answer: Olive Ridley Turtle is alive, Polacanthus is extinct.</s>