In Luke 13:4 of the KJV, the word "sinners" is not linked to it's Greek Lemma or any of the other language references.
That's correct. The King James Version is aligned with Scrivener's Textus Receptus (you can see this in the book's Information page in the Reverse Interlinear section). Scrivener's Textus Receptus does not include a Greek word that can be aligned to the word "sinners", so this is handled as text that was inserted by the translators.
