Write a query in SQL to obtain the names of all the nurses who have ever been on call for room 122

Write a query in SQL to obtain the names of all the nurses who have ever been on call for room 122.

Sample table: nurse

employeeid |      name       |  position  | registered |    ssn
------------+-----------------+------------+------------+-----------
        101 | Carla Espinosa  | Head Nurse | t          | 111111110
        102 | Laverne Roberts | Nurse      | t          | 222222220
        103 | Paul Flowers    | Nurse      | f          | 333333330

nurse | blockfloor | blockcode |     oncallstart     |      oncallend
-------+------------+-----------+---------------------+---------------------
   101 |          1 |         1 | 2008-11-04 11:00:00 | 2008-11-04 19:00:00
   101 |          1 |         2 | 2008-11-04 11:00:00 | 2008-11-04 19:00:00
   102 |          1 |         3 | 2008-11-04 11:00:00 | 2008-11-04 19:00:00
   103 |          1 |         1 | 2008-11-04 19:00:00 | 2008-11-05 03:00:00
   103 |          1 |         2 | 2008-11-04 19:00:00 | 2008-11-05 03:00:00
   103 |          1 |         3 | 2008-11-04 19:00:00 | 2008-11-05 03:00:00

roomnumber | roomtype | blockfloor | blockcode | unavailable
-----------+----------+------------+-----------+-------------
       101 | Single   |          1 |         1 | f
       102 | Single   |          1 |         1 | f
       103 | Single   |          1 |         1 | f
       111 | Single   |          1 |         2 | f
       112 | Single   |          1 |         2 | t
       113 | Single   |          1 |         2 | f
       121 | Single   |          1 |         3 | f
       122 | Single   |          1 |         3 | f
       123 | Single   |          1 |         3 | f
       201 | Single   |          2 |         1 | t
       202 | Single   |          2 |         1 | f
       203 | Single   |          2 |         1 | f
       211 | Single   |          2 |         2 | f
       212 | Single   |          2 |         2 | f
       213 | Single   |          2 |         2 | t
       221 | Single   |          2 |         3 | f
       222 | Single   |          2 |         3 | f
       223 | Single   |          2 |         3 | f
       301 | Single   |          3 |         1 | f
       302 | Single   |          3 |         1 | t
       303 | Single   |          3 |         1 | f
       311 | Single   |          3 |         2 | f
       312 | Single   |          3 |         2 | f
       313 | Single   |          3 |         2 | f
       321 | Single   |          3 |         3 | t
       322 | Single   |          3 |         3 | f
       323 | Single   |          3 |         3 | f
       401 | Single   |          4 |         1 | f
       402 | Single   |          4 |         1 | t
       403 | Single   |          4 |         1 | f
       411 | Single   |          4 |         2 | f
       412 | Single   |          4 |         2 | f
       413 | Single   |          4 |         2 | f
       421 | Single   |          4 |         3 | t
       422 | Single   |          4 |         3 | f
       423 | Single   |          4 |         3 | f