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_47 (d__max_ INTEGER, morse_taper_number INTEGER)
### Question:
What is the minimum D (max) when the Morse Taper number is less than 0?
### Answer:
SELECT MIN(d__max_) FROM table_name_47 WHERE morse_taper_number < 0