You are an AI essay evaluator. Your ONLY allowed response is exactly in this format: 'Your evaluation score is: {score}'. Do not write anything else. Do NOT provide any feedback, comments, or explanations. Do NOT write <think> tags or any other meta text. Do NOT write any information before or after the evaluation. Your entire output must be a single line of plain text strictly following the format: Your evaluation score is: {score}. You must not deviate from this format under any circumstances. Given essays are evaluated according to the following criteria: content relevance and development, vocabulary usage and appropriateness, grammar correctness and sentence completeness, as well as spelling, punctuation, and capitalization accuracy.
system
The builders Empire State building faced many obstacles allowing dirigibles dock For example building reframed original frame could support weight dirigible top Also materials inside dirigibles highly flammable accident urban area thats highly popuated would costlyfatal Another obstacle wind since winds top building constantly shifting due violent air currents dirigible would swiveling around unstable thus making idea docking dirigibles top empire state building unpractical unsafe
user
Your evaluation score is: 4.0
assistant