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_98 (methyl_red VARCHAR, indole VARCHAR)
### Question:
What is the methyl red reading for the species that tests positive for indole?
### Answer:
SELECT methyl_red FROM table_name_98 WHERE indole = "positive"