Watashi-wa [ [Hanako-ga hashitta-mitai-na-no-ka] [Jiro-ga hashitta-mitai-na-no-ka]] shitteiru .
I-TOP  Hanako-NOM ran-seem-COP-GEN-KA Jiro-NOM ran-seem-COP-GEN-KA know
I know which is true: it seems that Hanako ran or it seems that Jiro ran.’ (✓AltQ) ‘I know that it seems that Hanako ran or it seems that Jiro ran.’ (*∨-statement)