Write SQL query to solve given problem: Have the teacher "42d43fa6f37314365d08692e08680973" acquired P.h.D or doctor degree?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT CASE WHEN teacher_prefix = 'Dr.' THEN 'Yes' ELSE 'NO' END FROM projects WHERE teacher_acctid = '42d43fa6f37314365d08692e08680973'