GATE Computer Science (CS) 2021 Shift 1 Solved Paper

The following relation records the age of 500 employees of a company, where empNo (Indicating the employee number) is the key:
empAge(empNo, age)
Consider the following relational algebra expression:
π_empNo(empAge ⋈ _(age>age1) ρ_{empNo 1, age1}(empAge))
What does the above expression generate?