code: def doc_to_decontamination_query(self, doc):
      return doc["context"]
  
imports: from lm_eval.base import Task, rf
  from lm_eval.metrics import mean
label_desc: Use image node_id 9 for calling the Arithmetic obj's underlying member method code with example usage: obj.doc_to_decontamination_query(doc) and returns: doc