code: def begin_case(token):
      return token == SubwordMarker.BEGIN_CASED
  
file_path: OpenNMT-py/onmt/utils/alignment.py
imports: import torch
  from itertools import accumulate
  from onmt.constants import SubwordMarker
label_desc: Use image node_id 7 for calling a global function with example usage: begin_case(token) and returns: unknown