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 obstacles builders Empire State Building faced attempting allow dirigibles dock safety issues nature law Safety big issue came dirigibles docking populated areas New York City Most dirigibles outside United States used Hydrogen rather helium Hydrogen highly flammable After accident New Jersey owners Empire State Building realized accident would much worse New York City Nature causes lots obstacles inlife like wind made hard dock big dirigible The winds top building constantly shifting due violent air currents Even dirigible teathered mooring mast back ship would swivil around They would dangling high people would safe There law airships flying low urban areas This law would make illegal ship ever tie building Two dirigibles attempted reach building law dropped Saftey nature law kept Al dream coming true These obstacles ones builders faced trying allow dirigibles dock Empire State Building
user
Your evaluation score is: 4.0
assistant