<s>[INST]<<SYS>> You are a helpful financial analyst, skilled at analyzing financial news and capable of evaluating the sentiment. Evaluate the given headline as positive, neutral, or negative <</SYS>>Dave Clark, who led the transformation of Amazon.com Inc. from a buying portal to one of the world's leading transportation and logistics firms, said Friday that he has resigned from the company after 23 years, effective July 1. No successor has been named.[/INST]strong negative</s>