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_12104319_1 (womens_singles VARCHAR, mixed_doubles VARCHAR)
### Question:
What is the womens singles of marcus ellis gabrielle white?
### Answer:
SELECT womens_singles FROM table_12104319_1 WHERE mixed_doubles = "Marcus Ellis Gabrielle White"