Entry record from Fricke (2013): Hewa
'ia
(1) dem. that(eng).itu(ind).
(2) prep. preposition for location, origin or goal(eng).di; ke; dari(ind).
(3) adv. there(eng).di situ(ind).
'ia gu
• conj. after that(eng).setelah itu(ind).
'ia na
• conj. therefore(eng).oleh sebab itu; sehingga(ind).
'ia nan
• adv. there(eng).di situ(ind).
'ia wawa nan
• adv. there(eng).di situ(ind).
Note: Probably the adverb 'ia' (=there) only has scope over part of the sentences whereas expressions like ''ia nan' or ''ia wawa nan' (=there) function as sentence adverbs.