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_63 (prince_xml VARCHAR, gecko VARCHAR, webkit VARCHAR)
### Question:
What is the Prince XML value for the engine that has a Gecko value of 'no' and webkit value of 'nightly build'?
### Answer:
SELECT prince_xml FROM table_name_63 WHERE gecko = "no" AND webkit = "nightly build"