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
When idea mooring dock dirigibles first seemed like brilliant idea But time construction went surmounting obstacles arose made idea Mooring dock stayed idea When mooring mast finished obvious safety hazards stopped fulfilling purpose The greatest hazard nature mast The Winds height strong violent constantly Shifting Even dirigible tethered back ship would swireled around mooring mastAnother hazard dirigiples outside United States used hydrogen rather helium hydrogen extremely flammable After German dirigible Hindenburg destroyed fire owners Empire State Building realized could take A final obstacle arose law Airships flying low urban areas law made illegal ship even come near building
user
Your evaluation score is: 4.0
assistant