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.
Q: Context: Boy with Thorn, also called Fedele (Fedelino) or Spinario, is a Greco-Roman Hellenistic bronze sculpture of a boy withdrawing a thorn from the sole of his foot, now in the Palazzo dei Conservatori, Rome.
Question: What material was used for Boy with Thorn?
A:
bronze