Given the task definition and input, reply with output. Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

I have always wondered what techniques directors use to get amateur actors, especially young ones, to cry. How can someone surrounded with so many film crew and cameras can concentrate enough and feel so sad that s/he can possibly burst into tears? In general, is crying in a movie scene (with real tears) something that can be learned by practice or is it something that only talented people can perform?
What techniques are used by directors to make an actor cry?