class_docstr: The class of expressions resulting from applying ``BinaryRelation``
  to the arguments.
class_docstr_tok: ["The","class","of","expressions","resulting","from","applying","``","BinaryRelation","``","to","the","arguments","."]
docstr: The left-hand side of the relation.
docstr_tok: ["The","left-hand","side","of","the","relation","."]
code: def lhs(self):
      """The left-hand side of the relation."""
      return self.arguments[0]
  
imports: from typing import Optional
  from sympy.core.singleton import S
  from sympy.assumptions import AppliedPredicate, ask, Predicate, Q
  from sympy.core.kind import BooleanKind
  from sympy.core.relational import Eq, Ne, Gt, Lt, Ge, Le
  from sympy.logic.boolalg import conjuncts, Not
label_desc: Use image node_id 1 for calling the AppliedBinaryRelation obj's underlying member method code with example usage: obj.lhs() and returns: self