code: def load_fol(s):
      """
      Temporarily duplicated from ``nltk.sem.util``.
      Convert a  file of first order formulas into a list of ``Expression`` objects.
  
      :param s: the contents of the file
      :type s: str
      :return: a list of parsed formulas.
      :rtype: list(Expression)
      """
      statements = []
      for linenum, line in enumerate(s.splitlines()):
          line = line.strip()
          if line.startswith("#") or line == "":
              continue
          try:
              statements.append(Expression.fromstring(line))
          except Exception as e:
              raise ValueError(
                  f"Unable to parse line {linenum}: {line}"
              ) from e
      return statements
  
imports: import os
  from abc import ABCMeta, abstractmethod
  from functools import reduce
  from operator import add, and_
  from nltk.data import show_cfg
  from nltk.inference.mace import MaceCommand
  from nltk.inference.prover9 import Prover9Command
  from nltk.parse import load_parser
  from nltk.parse.malt import MaltParser
  from nltk.sem.drt import AnaphoraResolutionException, resolve_anaphora
  from nltk.sem.glue import DrtGlue
  from nltk.sem.logic import Expression
  from nltk.tag import RegexpTagger
label_desc: Use image node_id 1 for calling a global function with example usage: load_fol(s) and returns: statements