### Database Schema:
CREATE TABLE taughtBy (
	course_id	INTEGER	NULL	PRIMARY KEY,
	p_id	INTEGER	NULL	PRIMARY KEY,
	foreign key (course_id) references course (course_id),
	foreign key (p_id) references person (p_id)
);

CREATE TABLE course (
	course_id	INTEGER	NULL	PRIMARY KEY,
	courseLevel	TEXT	NULL
);

CREATE TABLE person (
	p_id	INTEGER	NULL	PRIMARY KEY,
	professor	INTEGER	NULL,
	student	INTEGER	NULL,
	hasPosition	TEXT	NULL,
	inPhase	TEXT	NULL,
	yearsInProgram	TEXT	NULL
);

CREATE TABLE advisedBy (
	p_id	INTEGER	NULL	PRIMARY KEY,
	p_id_dummy	INTEGER	NULL	PRIMARY KEY,
	foreign key (p_id) references person (p_id),
	foreign key (p_id_dummy) references person (p_id)
);

### User's Query:
Which course has more teachers, course no.16 or course no.18?

### Extra Knowledge:
teachers refers to taughtBy.p_id; course no.16 refers to course_id = 16; course no.18 refers to course_id = 18
SELECT course_id FROM taughtBy WHERE course_id = 11 OR course_id = 18 GROUP BY course_id ORDER BY COUNT(course_id) DESC LIMIT 1