Verify if the official website for China National Tourism Administration, http://en.cnta.gov.cn/, is currently accessible. If it is, identify the main purpose of the website from its homepage content. If it remains inaccessible, clearly state the error message encountered.
Attempt to navigate to 'http://en.cnta.gov.cn/'. If the page loads successfully, read the homepage content to determine the website's main purpose. If a 'net::ERR_NAME_NOT_RESOLVED' or similar error is encountered, record the specific error message. State whether the website is accessible and, if so, its main purpose; otherwise, state the exact error message.
If the website loads successfully, the agent must describe its main purpose (e.g., 'The website is the official portal for the China National Tourism Administration, providing news, policies, and travel information related to tourism in China.'). If the website remains inaccessible, the agent must state: 'The website http://en.cnta.gov.cn/ remains inaccessible due to a net::ERR_NAME_NOT_RESOLVED error.' (or the exact error message encountered).