Predicative property expressions always occur without a copula in present tense, which is why Value 2 was chosen. They do occur with the past tense marker bin in the past tense, which is not analysed as a copula here. However, they do occur with the copula bi with future time reference.
Another complication concerns the function of stative verbs like stap 'live, stay' or jidan 'sit, be, stay' which could be said to be taking on a copula-like function, as in Imin telim mi thed ... ston alabat im jidan jeya na 'he told me (that) those stones are all around there' (DA98_02_raintime) or
Wi garra jidan la woda olagija.
'We may have to live in the water forever.' (Sandefur & Sandefur 1982: 61)
Source: Hudson 1985: 72