<s> """<STR_LIT>""" <EOL> from nltk . sem . util import ( parse_sents , interpret_sents , evaluate_sents , <EOL> root_semrep ) <EOL> from nltk . sem . evaluate import ( Valuation , Assignment , Model , Undefined , <EOL> is_rel , set2rel , arity , read_valuation ) <EOL> from nltk . sem . logic import ( boolean_ops , binding_ops , equality_preds , <EOL> read_logic , Variable , Expression , <EOL> ApplicationExpression , LogicalExpressionException ) <EOL> from nltk . sem . skolemize import skolemize <EOL> from nltk . sem . lfg import FStructure <EOL> from nltk . sem . relextract import ( extract_rels , rtuple , clause ) <EOL> from nltk . sem . boxer import Boxer <EOL> from nltk . sem . drt import DrtExpression , DRS </s>
