code: def append_context(cls, ctx, partial_ctx):
      ctx = ctx.split(
          "\n\n"
      )  # Each fewshot context is on its own new line.
      ctx.pop()  # Remove the correct context put in by `doc_to_text`.
      return "\n\n".join([*ctx, partial_ctx]) if ctx else partial_ctx
  
imports: import numpy
  from lm_eval.base import rf, Task
  from lm_eval.metrics import mean
label_desc: Use image node_id 15 for calling the WinogradSchemaChallenge273 obj's underlying member method code with example usage: obj.append_context(cls, ctx, partial_ctx) and returns: unknown