code: def set_linked_probs(self, linked_statements):
          
          for st in linked_statements:
              source_probs = [s.belief for s in st.source_stmts]
              st.inferred_stmt.belief = numpy.prod(source_probs)
docs: Sets the belief probabilities for a list of linked INDRA Statements.
  
          The list of LinkedStatement objects is assumed to come from the
          MechanismLinker. The belief probability of the inferred Statement is
          assigned the joint probability of its source Statements.
  
          Parameters
          ----------
          linked_statements : list[indra.mechlinker.LinkedStatement]
              A list of INDRA LinkedStatements whose belief scores are to
              be calculated. The belief attribute of the inferred Statement in
              the LinkedStatement object is updated by this function.