source: The DBTI Tarlac Batch 1988 comprised of 147 students who graduated from high school on the 40th Commencement Exercises on March 27, 1988.
target: The DBTI Tarlac Batch 1988 comprised of 147 students.  They graduated from high school on the 40th Commencement Exercises.  The Commencement Exercises were on March 27, 1988.
references: The DBTI Tarlac Batch 1988 comprised of 147 students.  They graduated from high school on the 40th Commencement Exercises.  The Commencement Exercises were on March 27, 1988.