The combination of key fields provided, and the output. Only the input. Do not restate the input. Do not add a statistics. If uncertain, frame as general industry knowledge. Only include the fields that are present. When a field is missing, it's not a problem. It's common for buyers to check for missing or unverified fields. If a field is missing, it's a risk. and a buyer tip is needed. Only include the fields that are present. When a field is missing, it's not a problem. It's common for buyers to check for missing or unverified fields. If a field is missing, it's a risk, and a buyer tip is needed. Only include the fields that are present. When a field is missing, it's not a focus — unless most fields are missing, then they become the main focus — unless most fields are missing, then they become the main focus — unless most fields are missing, then they become the main focus. Only include the fields that are present in the input. Do not add a note like 'this is a good idea'. Do not use markdown. Output only the JSON. No extra text.