### Database Schema:
CREATE TABLE Crime (
	report_no	INTEGER	NULL	PRIMARY KEY,
	case_number	TEXT	NULL,
	date	TEXT	NULL,
	block	TEXT	NULL,
	iucr_no	TEXT	NULL,
	location_description	TEXT	NULL,
	arrest	TEXT	NULL,
	domestic	TEXT	NULL,
	beat	INTEGER	NULL,
	district_no	INTEGER	NULL,
	ward_no	INTEGER	NULL,
	community_area_no	INTEGER	NULL,
	fbi_code_no	TEXT	NULL,
	latitude	TEXT	NULL,
	longitude	TEXT	NULL,
	foreign key (district_no) references District (district_no),
	foreign key (iucr_no) references IUCR (iucr_no),
	foreign key (community_area_no) references Community_Area (community_area_no),
	foreign key (ward_no) references Ward (ward_no),
	foreign key (fbi_code_no) references FBI_Code (fbi_code_no)
);

CREATE TABLE District (
	district_no	INTEGER	NULL	PRIMARY KEY,
	district_name	TEXT	NULL,
	address	TEXT	NULL,
	zip_code	INTEGER	NULL,
	commander	TEXT	NULL,
	email	TEXT	NULL,
	phone	TEXT	NULL,
	fax	TEXT	NULL,
	tty	TEXT	NULL,
	twitter	TEXT	NULL
);

CREATE TABLE Neighborhood (
	neighborhood_name	TEXT	NULL	PRIMARY KEY,
	community_area_no	INTEGER	NULL,
	foreign key (community_area_no) references Community_Area (community_area_no)
);

CREATE TABLE Ward (
	ward_no	INTEGER	NULL	PRIMARY KEY,
	alderman_first_name	TEXT	NULL,
	alderman_last_name	TEXT	NULL,
	alderman_name_suffix	TEXT	NULL,
	ward_office_address	TEXT	NULL,
	ward_office_zip	TEXT	NULL,
	ward_email	TEXT	NULL,
	ward_office_phone	TEXT	NULL,
	ward_office_fax	TEXT	NULL,
	city_hall_office_room	INTEGER	NULL,
	city_hall_office_phone	TEXT	NULL,
	city_hall_office_fax	TEXT	NULL,
	Population	INTEGER	NULL
);

CREATE TABLE IUCR (
	iucr_no	TEXT	NULL	PRIMARY KEY,
	primary_description	TEXT	NULL,
	secondary_description	TEXT	NULL,
	index_code	TEXT	NULL
);

CREATE TABLE FBI_Code (
	fbi_code_no	TEXT	NULL	PRIMARY KEY,
	title	TEXT	NULL,
	description	TEXT	NULL,
	crime_against	TEXT	NULL
);

CREATE TABLE Community_Area (
	community_area_no	INTEGER	NULL	PRIMARY KEY,
	community_area_name	TEXT	NULL,
	side	TEXT	NULL,
	population	TEXT	NULL
);

### User's Query:
What phone number does alderman Emma Mitts have to call if she wants to speak to the commander in charge of the investigation of the crimes that have occurred in her ward?

### Extra Knowledge:

SELECT T3.phone FROM Ward AS T1 INNER JOIN Crime AS T2 ON T2.ward_no = T1.ward_no INNER JOIN District AS T3 ON T3.district_no = T2.district_no WHERE T1.alderman_first_name = 'Emma' AND T1.alderman_last_name = 'Mitts'