Given the task definition and input, reply with output. Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Context: Dipterocarpus grandiflorus is a critically endangered common medium hardwood tree in South-East Asia and India.
Question: What is the iucn conservation status of Dipterocarpus grandiflorus?
critically endangered