code: def nextword(target, source):
      for i, w in enumerate(source):
          if w == target:
              return source[i + 1]
  
file_path: vowpal_wabbit/demo/cats/utility/get_offline_results.py
imports: import sys
  import getopt
  import math
  from confidence_interval import ConfidenceInterval
label_desc: Use image node_id 1 for calling a global function with example usage: nextword(target, source) and returns: source