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 lot obstacles trying dock dirigibles figure way around The architects believed mooring mast would work started building Soon enough problems evolved could fixed An example one problems dirigibles use hydrogen helium makes flammable If dirigible accident New York many people would hurt Another factor goes wind currents The wind strong dirigible would swirling around even tied However could use lead weights keep still fell would hurt pedestrians walking Furthermore state law made illegal airships fly low made impossible dirigibles tied mooring mast Empire State Building After problems architects never added landing gear mooring mast knew would used intended
user
Your evaluation score is: 4.0
assistant