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
In passage The Mooring Mast Marcia Amidon myriad obstacles faced builders Empire State Building terms allowing dirigibles dock First problem constructing mooring mast top building s flat roof Because thousandfoot dirigible moored top building held single cable tether would add stress building s frame building would unable support stress dirigible wind pressure Next safety became issue After discovery dirigible s built outside United States use hydrogen rather helium hydrogen highly flammable owners Empire State Building realized hazard involved highly flammable object fly densely populated area This brought attention German dirigible destroyed fire Lakehurst New Jersey An addition problem nature The winds top building posed problem dirigibles back end swivel around mooring mast seeing weights could used weight back since would dangling pedestrians street Lastly existing law airships flying low urban areas would illegal Ship tied building approach area In light aforementioned reasons evident builders Empire State Building faced many obstacles attempting allow dirigibles dock
user
Your evaluation score is: 5.0
assistant