Detailed Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
Q: Passage: Anderson did not play again on tour until May at the Madrid Open. He lost in the first round against 13th seed Gael Monfils. Anderson then played in Rome as the 16th seed. Anderson won his first-round match against Feliciano Lopez, but lost in the second round to Juan Monaco, despite winning the first set. Anderson then competed in Nice as the third seed. He defeated qualifier Diego Schwartzman, before losing to fifth seed Joao Sousa. Anderson then played at the French Open as the 18th seed, where he lost in the first round to Stephane Robert. Anderson started his grass season at Queen's Club. Since he entered late, he had to go through qualifying. Anderson defeated Edward Corrie and Jiri Vesely, both in straight sets, to enter the main draw. He then lost to Bernard Tomic in the first round of the main draw. Anderson then played at Nottingham as the top seed. He defeated Ivan Dodig and 14th seed Fernando Verdasco to reach the quarterfinals, where he lost to sixth seed and eventual champion Steve Johnson. Anderson then played at Wimbledon as the 20th seed. He lost in the first round to Denis Istomin, despite winning the first two sets.
Link Information: none Answer: none
A:
What venue was the Madrid open at?