How many different courses offered by Physics department?
CREATE TABLE department (
    dept_name text,
    building text,
    budget number
)

CREATE TABLE time_slot (
    time_slot_id text,
    day text,
    start_hr number,
    start_min number,
    end_hr number,
    end_min number
)

CREATE TABLE student (
    id text,
    name text,
    dept_name text,
    tot_cred number
)

CREATE TABLE instructor (
    id text,
    name text,
    dept_name text,
    salary number
)

CREATE TABLE advisor (
    s_id text,
    i_id text
)

CREATE TABLE section (
    course_id text,
    sec_id text,
    semester text,
    year number,
    building text,
    room_number text,
    time_slot_id text
)

CREATE TABLE course (
    course_id text,
    title text,
    dept_name text,
    credits number
)

CREATE TABLE teaches (
    id text,
    course_id text,
    sec_id text,
    semester text,
    year number
)

CREATE TABLE takes (
    id text,
    course_id text,
    sec_id text,
    semester text,
    year number,
    grade text
)

CREATE TABLE classroom (
    building text,
    room_number text,
    capacity number
)

CREATE TABLE prereq (
    course_id text,
    prereq_id text
)
SELECT COUNT(DISTINCT course_id) FROM course WHERE dept_name = 'Physics'
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: How many different courses offered by Physics department? ### Input: CREATE TABLE department (
    dept_name text,
    building text,
    budget number
)

CREATE TABLE time_slot (
    time_slot_id text,
    day text,
    start_hr number,
    start_min number,
    end_hr number,
    end_min number
)

CREATE TABLE student (
    id text,
    name text,
    dept_name text,
    tot_cred number
)

CREATE TABLE instructor (
    id text,
    name text,
    dept_name text,
    salary number
)

CREATE TABLE advisor (
    s_id text,
    i_id text
)

CREATE TABLE section (
    course_id text,
    sec_id text,
    semester text,
    year number,
    building text,
    room_number text,
    time_slot_id text
)

CREATE TABLE course (
    course_id text,
    title text,
    dept_name text,
    credits number
)

CREATE TABLE teaches (
    id text,
    course_id text,
    sec_id text,
    semester text,
    year number
)

CREATE TABLE takes (
    id text,
    course_id text,
    sec_id text,
    semester text,
    year number,
    grade text
)

CREATE TABLE classroom (
    building text,
    room_number text,
    capacity number
)

CREATE TABLE prereq (
    course_id text,
    prereq_id text
) ### Response: SELECT COUNT(DISTINCT course_id) FROM course WHERE dept_name = 'Physics'