123441b0_guage__How_to_Speak_Vegetarian__Examples
Which (which is used for NHAs, plants, and objects) Who (who is used with sentient beings) [Examples] 
The monkeys which live near the temple are a gregarious lot. The monkeys who live near the temple are a gregarious lot.
World Vegetarian Congress, 2004 - Animal-Friendly Language: How to Speak Vegetarian
Examples