ORA_ELEARNING type: course or offer?

Summary:

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I create a course and an offer, both of type ORA_ELEARNING. How to tell if these 2 learning items (wlf_learning_items_f_vl) are from a course or from an offer?

Both records are very similar and LEARNING_ITEM_ID is not listed in WLF_LI_COURSES_F nor in WLF_LI_CLASSES_F table.

I need a way to tell "Oh, this ORA_ELEARNING record written in wlf_learning_items_f_vl comes from an offer!"

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