What imperative has m cha as 3.sg?
CREATE TABLE table_42915 (
    "m\u00e5cha" text,
    "indicative" text,
    "imperative" text,
    "subjunctive" text,
    "inverse subjunctive" text
)
SELECT "imperative" FROM table_42915 WHERE "m\u00e5cha" = '3.sg'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What imperative has m cha as 3.sg? ### Input: CREATE TABLE table_42915 (
    "m\u00e5cha" text,
    "indicative" text,
    "imperative" text,
    "subjunctive" text,
    "inverse subjunctive" text
) ### Response: SELECT "imperative" FROM table_42915 WHERE "m\u00e5cha" = '3.sg'