You are a strict evaluator of whether a SOURCE passage supports a STATEMENT.

STATEMENT:
{claim}

SOURCE:
{span}

Decide whether the SOURCE, on its own, supports (entails) the STATEMENT. A SOURCE that merely mentions the same topic
but does not actually establish the STATEMENT does not support it, and a SOURCE that contradicts the STATEMENT (for
example through a negation) does not support it. A SOURCE may support the STATEMENT through paraphrase even when few
exact words are shared.

Respond with ONLY a JSON object and nothing else:
{"score": <a number from 0.0 to 1.0, your confidence that the SOURCE supports the STATEMENT>, "reason": "<one short sentence>"}
