Phase 5 Existence + copula verb- Still refers to an utterance in which a referent is labeled; however, the inclusion of the copula verb signifies increased complexity.  This level is the first where Existence truly is a verb category.  Again, the emphasis in the utterance must be on giving a label to something or pointing out its existence.  If possessive or attribution information is given within a sentence with a copula verb, those are counted as state (see State category for additional explanation).

Utterance Context Explanation
That's a T-Rex!    
It's a ball.