[-ta]

The word "ta" is a polysemous word, meaning it has multiple related meanings and uses. 

As a suffix, it indicates possession or relationship, that parallels to Austronesian possessive markers, e.g., Tagalog -ng in ama-ng (‘father of’). It combines with affixes like ni- (progressive) or pang- (instrumental), e.g., ponta-an-ta ([pon.taʔan.ta], ‘we head toward’).

As a conjunction, it introduces a subordinate clause to indicate reason or explanation.

With the glottal-stop-phonemic inflection; ta’ or ata’ is an interjection emphasis marker, admonition, or warning; used to draw attention to a statement or warning - its emphatic role, marked by the okina, enhances Boie’nen’s expressive prosody.

It's worth noting that the conjunction "ta" may have a slightly different connotation or nuance depending on the context in which it is used. For example, it may imply a sense of causality or reason, as in the example sentence "Nagkaenna ako ta ponaw na ako" (I already ate because I was hungry). However, the core meaning of the conjunction "ta" remains the same, which is to introduce a subordinate clause and indicate the reason or explanation for the action described in the main clause.

“Bina’no ko na iya ta mialinen na kami.” (I called him already because we're about to leave.)
This sentence implies that the speaker has already called someone because they are about to leave. The use of "ta" indicates a causal relationship between the two clauses.