Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_1341423_49 ( candidates VARCHAR, first_elected VARCHAR, incumbent VARCHAR )

### Question ###
Who were the candidates in the district first elected in 1998 whose incumbent ended up being Paul Ryan?

### Accurate SQL ###

SELECT candidates FROM table_1341423_49 WHERE first_elected = 1998 AND incumbent = "Paul Ryan"