query: SELECT DISTINCT Fname FROM STUDENT WHERE Fname LIKE '%a%'
question: Find the first names of students what's first names contain letter "a".
query_toks: SELECT DISTINCT Fname FROM STUDENT WHERE Fname LIKE ' % a % '
query_toks_no_value: select distinct fname from student where fname like value
question_toks: Find the first names of students what's first names contain letter "a".