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 different obstacles builders Empire State Building faced attempting allow dirigibles dock For example existing law made airships could fly low urban areas meant dirigible could tie building approach area Another problem making mast strong enough support dirigible For example paragraph A thousandfoot dirigible moored top building held single cable tether would add stress building s frame This shows improvements made mast One biggest problems building mast issue dirigibles filled hydrogen highly flammable gas The owners building remembered German dirigible Hindenburg destroyed fire much worse accident would taken place densely populated area
user
Your evaluation score is: 5.0
assistant