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_27 (opponents_in_the_final VARCHAR, outcome VARCHAR, surface VARCHAR)
### Question:
Tell me the opponents for runner-up and surface of grass
### Answer:
SELECT opponents_in_the_final FROM table_name_27 WHERE outcome = "runner-up" AND surface = "grass"