Which operating system has 1GB (mobile ddr) memory (RAM)?
CREATE TABLE table_name_27 (
    operating_system_version VARCHAR,
    memory___ram__ VARCHAR
)
SELECT operating_system_version FROM table_name_27 WHERE memory___ram__ = "1gb (mobile ddr)"
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: Which operating system has 1GB (mobile ddr) memory (RAM)? ### Input: CREATE TABLE table_name_27 (
    operating_system_version VARCHAR,
    memory___ram__ VARCHAR
) ### Response: SELECT operating_system_version FROM table_name_27 WHERE memory___ram__ = "1gb (mobile ddr)"