LFG Question

[Jung-Hee Bae]

Folks,

In korean some modal expressions e.g. vagueness or uncertainty are showed as
epistemic sentence-ending-suffixes (-te) but in german as modal particles or
konjunktive modal verbs.

I would like to know whether or not it is possible in LFG to equate between
epistemic morphosyntactical suffix and modal particle (or discourse marker)
or modal verb ?
could somebody help me searching references to LFG-morphological rules of
epistemic modality for korean?

Thanks
Jung Hee Bae