Detailed Instructions: 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: The ornate roof structure, painted green, maroon and cream, and cobbled floors of the current structure, designed in 1881 by Sir Horace Jones (who was also the architect of Billingsgate and Smithfield Markets), make Leadenhall Market a tourist attraction.
Question: The architect of Leadenhall Market was whom?
A:
horace jones