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
There many obstacles builders Empire State Building faced high winds could dock dirigibles law fly aircraft low near urban areas one obstacle builders faced safety dirigibles anchoring busy streets filled people high winds Most dirigibles United States used hydrogen rather helium hydrogen highly flamable foreign dirigible anchored Empire State building would cause safety issue high winds top building could cause accident occur causing dirigible blow potentially endanger pedestrians Another obstacle builders faced law made illegal dirigibles ever dock building illegal aircrafts fly low near urban areas would long process ever get government let
user
Your evaluation score is: 4.0
assistant