pairs = [
    ("How do I reset my password?", "How can I reset my password?"),
    ("Is the API rate limited?",     "Is the API not rate limited?"),
    ("Refund policy for annual plans", "Refund policy for monthly plans"),
]

for a, b in pairs:
    va, vb = encoder.encode([a, b], normalize_embeddings=True)
    print(f"{float(va @ vb):.3f}   {a!r}  vs  {b!r}")