text: The exact cause of<unk>  is not known but it seems that genetic mutation has a strong association with this tumor.
option_0: Astrocytoma causes
option_1: Glioma causes
option_2: Oligoastrocytoma causes
option_3: Schwannoma causes
option_4: Chondroma causes
option_5: Brain abscess causes
option_6: Mesothelioma causes
option_7: Brain types