code: def init_parser():
      global uts_parser
      if not uts_parser:
          uts_parser = DependencyParser.load("vi-dp-v1a1")
      return uts_parser
  
imports: from underthesea import word_tokenize
  from underthesea.models.dependency_parser import DependencyParser
label_desc: Use image node_id 1 for calling a global function with example usage: init_parser() and returns: uts_parser