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.

[EX Q]: Context: Mowat-Wilson syndrome (MWS) is characterized by severe mental retardation with seizures, specific facial dysmorphism, Hirschsprung disease, anomalies of the corpus callosum, and genitourinary and cardiac malformations. The cause of MWS is a de novo mutation in the ZEB2 gene. This report describes a Turkish boy who was clinically diagnosed with MWS and had his diagnosis confirmed by molecular analysis of the ZEB2 gene. The investigation identified a heterozygous complex rearrangement in exon 8 of ZEB2, specifically a 48-nucleotide deletion and a 44-nucleotide insertion that caused a frameshift. MWS is a relatively newly identified disorder, and even MWS patients without Hirschsprung disease can be diagnosed easily based on clinical findings alone.
Question: Which gene is responsible for the development of the Mowat-Wilson syndrome?
[EX A]: zeb2

[EX Q]: Context: Cory Hightower (born July 30, 1979) is a professional basketball player who was selected by the San Antonio Spurs in the 2nd round (54th pick) in the 2000 NBA Draft.
Question: Player Cory Hightower played for which team?
[EX A]: san antonio spurs

[EX Q]: Context: Marek was a farmer who lived in a village far away. One day he became very ill, and everyone thought he would die. They sent for a doctor, who arrived two days later and examined the sick man. The doctor asked for a pen and some paper to write down the name of the medicine. But there was no pen or paper in the village, because no one could read or write. The doctor picked up a piece of burnt wood from the fire. Using the wood, he wrote the name of the medicine on the door of the house. "Get this medicine for him," he said,"and he will soon get better." Marek's family and friends did not know what to do. They could not read the strange writing. Then the village baker had an idea. He took off the door of the house, put it on his cart and drove to the nearest town. He bought the medicine, and Marek was soon well again. He would not let anyone wash the magic words away from the door.
Question: On what did the doctor write the name of the medicine?
[EX A]:
the door of the house.