What class in the word with part 4 'giheizan'?
CREATE TABLE table_72907 (
    "Class" text,
    "Part 1" text,
    "Part 2" text,
    "Part 3" text,
    "Part 4" text,
    "Verb meaning" text
)
SELECT "Class" FROM table_72907 WHERE "Part 4" = 'giheizan'
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 class in the word with part 4 'giheizan'? ### Input: CREATE TABLE table_72907 (
    "Class" text,
    "Part 1" text,
    "Part 2" text,
    "Part 3" text,
    "Part 4" text,
    "Verb meaning" text
) ### Response: SELECT "Class" FROM table_72907 WHERE "Part 4" = 'giheizan'