code: def span_contains_unbalanced_parentheses(span: Span) -> bool:
      stack_counter = 0
      for token in span:
          if token.text == "(":
              stack_counter += 1
          elif token.text == ")":
              if stack_counter > 0:
                  stack_counter -= 1
              else:
                  return True
  
      return stack_counter != 0
  
file_path: scispacy/scispacy/abbreviation.py
imports: from typing import Tuple, List, Optional, Set, Dict
  from collections import defaultdict
  from spacy.tokens import Span, Doc
  from spacy.matcher import Matcher
  from spacy.language import Language
label_desc: Use image node_id 2 for calling a global function with example usage: span_contains_unbalanced_parentheses(span) and returns: unknown, True