looking for assignment ID in PAY_ELEMENT_ENTRIES_F

Summary:

PAY_ELEMENT_ENTRIES_F table description says it contains element entries for each assignment but table does not have assignment_ID as a field on the table

Content:

PAY_ELEMENT_ENTRIES_F

This table contains element entries for each assignment. The actual values for each entry are held in PAY_ELEMENT_ENTRY_VALUES_F. An entry represents a specific instance of an element for a particular assignment. For example, there may be a salary element and each assignment receives a salary element entry.

How do I find the assignment_id that is connected to the element entries? which table do I connect to to get this information.