Question: What nationality is the director of film Open Grave?
Sentence (from "Open Grave"): Open Grave is a 2013 American post-apocalyptic zombie-like suspense film directed by Gonzalo López-Gallego, starring Sharlto Copley as Jonah Cooke and Thomas Kretschmann, Joseph Morgan, Erin Richards, Josie Ho, and in supporting roles.
Relevant evidence: Yes