Have the teacher "42d43fa6f37314365d08692e08680973" acquired P.h.D or doctor degree?
teacher "42d43fa6f37314365d08692e08680973" refers to teacher_acctid = '42d43fa6f37314365d08692e08680973';
SELECT CASE WHEN teacher_prefix = 'Dr.' THEN 'Yes' ELSE 'NO' END FROM projects WHERE teacher_acctid = '42d43fa6f37314365d08692e08680973'