Count the number of different scientists assigned to any project.
CREATE TABLE projects (
    code text,
    name text,
    hours number
)

CREATE TABLE scientists (
    ssn number,
    name text
)

CREATE TABLE assignedto (
    scientist number,
    project text
)
SELECT COUNT(DISTINCT scientist) FROM assignedto
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: Count the number of different scientists assigned to any project. ### Input: CREATE TABLE projects (
    code text,
    name text,
    hours number
)

CREATE TABLE scientists (
    ssn number,
    name text
)

CREATE TABLE assignedto (
    scientist number,
    project text
) ### Response: SELECT COUNT(DISTINCT scientist) FROM assignedto