The diagram below describes the connection relationships between various tables related to a company's sales business. Please observe the diagram to answer the following questions:

Primary Chinese-English Correspondence.
"产品" :"Product"
"产品编号" : "Product ID"
"产品经理" :"Product Manager"
“产品类型”: “Product Type”
“产品系列”:“Product Series”
“城市编号”:“ City Code”
“城市经理编号”:“ City Manager ID”
“城市名”: “City Name”
“区域编号“:“Regional Code”
“区域经理“:“Regional Manager”
“区域名“:“Regional Name“
“第三方评级“:“Third-party Rating”
“金额”:“Amount”
“商机编号”: “Business Opportunity ID”
“上周销售阶段”:“ Last Week's Sales Stage”
“所属领域“:“Relevant Domain”
“所属行业“:“Industry Affiliation”
“预计签约日“:“Expected Signing Date”
Observing the contents of the fields in various tables in the diagram, which of the following is a fact table?