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 Mooring Mast builders Empire State building faced many obstacles attempts allowing dirigibles transportation future also known blimps dock building The biggest problem figuring make mast workThe main obstacle use mooring mast nature since winds top building constantly shifting strong violent air currents back dirigible would turn around around mast even ll tied mast It said excerpt dirigibles moored open landing fields weighted use lead weights Because would dangling high people would dangerous case falls Also builders control nature making difficultAnother obstacle stress body frame building receive dirigible held single cable tether The wind pressure stress would much building s foundation This solved modifying steel frame Building stronger keep building collapsingThe attempts allowing dirigibles building many obstacles end nothing law airships flying low urban areas
user
Your evaluation score is: 4.0
assistant