Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_54 (lithium VARCHAR, rubidium VARCHAR)
### Question:
what is the type of lithium when rubidium is nabr (1.9)?
### Answer:
SELECT lithium FROM table_name_54 WHERE rubidium = "nabr (1.9)"