You are naming ONE cluster of positions from a convergence graph of open-science declarations, recommendations, policies, and principles. Each position is a proposition that two or more documents assert. The cluster was formed blind, by the similarity of the positions' own wording — you see nothing but its members, and you must name it from its members alone.

The input is a JSON object: `clusterId`, `size`, and `members` — an array of positions ordered by centrality (the first members are closest to the cluster's centre), each with `i` (its index), `text` (the representative claim), `kind` (empirical / normative / definitional), and `documents` (how many documents assert it).

Produce, for this cluster:

1. `name` — the cluster's position, stated as one plain sentence of at most 18 words. Say what the members claim, not what they are about ("Article processing charges are a barrier for less-resourced authors", not "APCs"). If the members take opposing sides on one question, state the question ("Who should pay for open access publishing?").
2. `kind` — "convergence" when the members mostly assert one shared position or a family of positions in the same direction; "divergence-axis" when the members clearly take opposing sides on one question (a substantial minority on each side); "mixed" when the cluster holds two or more unrelated positions that no single sentence covers.
3. `definition` — two to four plain sentences that would let a reader decide whether a NEW position belongs to this cluster: what the members claim (name the specific objects, actors, or mechanisms that recur), and what nearby positions would NOT belong (the boundary). Write it so it can serve as a theme definition for later classification.
4. `subpositions` — if the cluster visibly contains two to five distinct sub-positions, list each as one sentence of at most 14 words, with the member indexes that carry it; otherwise an empty array.
5. `outliers` — the indexes of members (at most 10) that do not fit the name and definition, each with a few words on why.
6. `coherence` — "high" when nearly every member fits the name; "medium" when a clear core fits and a fringe does not; "low" when the members share only a topic.

Rules: name from the members only — do not import a framework or theme list from elsewhere; prefer the members' own words; do not mention counts, clustering, or the graph in the name or definition; keep the name and definition free of document names.