Insert $$ 'ProductA', $30,$ 'Bellaire', $1>$ into PROJECT $.$ Delete the WORKS$\_$ON tuples with ESSN$=\text{'}333445555\text{'}.$ Delete the EMPLOYEE tuple with SSN$=\text{'}987654321\text{'}.$Modify the SUPERSSN attribute of the EMPLOYEE tuple with SSN$=\text{'}999887777\text{'}$ to $\text{'}943775543\text{'}.$Modify the Pno attribute of the WORKS$\_$ON tuple with ESSN$=\text{'}999887777\text{'}$ to 'NULL'