As a general rule, predicative noun phrases occur with the individual-level copula ɛ/ɛr, whereas the locative copula is equivalent to the stage-level copula te/tiŋ. Counterexamples are rare in the corpus, which is very telling. However, predicate locatives can occur with the ɛ/ɛr and (even more rarely) predicate noun phrases with te/tiŋ.
Source: Cardoso 2004-2008
Source: Cardoso 2009: 157
Source: Cardoso 2009: 154