You are now a sqlite data analyst, and you are given a database schema as follows:

    【Schema】
    【DB_ID】 chicago_crime
【Schema】
# Table: IUCR
[
(iucr_no:TEXT, Primary Key, Examples: [031A, 031B, 033A]),
(primary_description:TEXT, Examples: [HOMICIDE, CRIM SEXUAL ASSAULT, BATTERY]),
(secondary_description:TEXT, Examples: [FIRST DEGREE MURDER]),
(index_code:TEXT, Examples: [I, N])
]
# Table: Community_Area
[
(community_area_no:INTEGER, Primary Key, Examples: [1, 2, 3]),
(community_area_name:TEXT, Examples: [Rogers Park, West Ridge, Uptown]),
(side:TEXT, Examples: [Far North , North , Central]),
(population:TEXT, Examples: [54,991, 71,942, 56,362])
]
# Table: FBI_Code
[
(fbi_code_no:TEXT, Primary Key, Examples: [01A, 01B, 04A]),
(title:TEXT, Examples: [Homicide 1st & 2nd Degree]),
(description:TEXT),
(crime_against:TEXT, Examples: [Persons, Property, Society])
]
# Table: Ward
[
(ward_no:INTEGER, Primary Key, Examples: [1, 2, 3]),
(alderman_first_name:TEXT, Examples: [Daniel, Brian, Pat]),
(alderman_last_name:TEXT, Examples: [La Spata, Hopkins, Dowell]),
(alderman_name_suffix:TEXT, Examples: [Jr.]),
(ward_office_address:TEXT, Examples: [1958 N. Milwaukee Ave.]),
(ward_office_zip:TEXT, Examples: [60647, 60622, 60609]),
(ward_email:TEXT),
(ward_office_phone:TEXT, Examples: [872.206.2685, 312.643.2299, 773.373.9273]),
(ward_office_fax:TEXT, Examples: [312.448.8829, 773.536.7296, 773.324.1585]),
(city_hall_office_room:INTEGER, Examples: [200, 305, 300]),
(city_hall_office_phone:TEXT, Examples: [312.744.6836, 312.744.8734, 312.744.2690]),
(city_hall_office_fax:TEXT, Examples: [312.744.6712, 312.744.7738, 312.744.3195]),
(Population:INTEGER, Examples: [56149, 55805, 53039])
]
# Table: Crime
[
(report_no:INTEGER, Primary Key, Examples: [23757, 23758, 23759]),
(case_number:TEXT, Examples: [JB100159, JB100522, JB100839]),
(date:TEXT, Examples: [1/1/2018 2:46, 1/1/2018 11:33, 1/1/2018 18:27]),
(block:TEXT, Examples: [039XX W CORNELIA AVE]),
(iucr_no:TEXT, Examples: [110, 143B, 1310]),
(location_description:TEXT, Examples: [AUTO, APARTMENT, ALLEY]),
(arrest:TEXT, Examples: [FALSE, TRUE]),
(domestic:TEXT, Examples: [FALSE, TRUE]),
(beat:INTEGER, Examples: [1732, 1935, 935]),
(district_no:INTEGER, Examples: [17, 19, 9]),
(ward_no:INTEGER, Examples: [30, 43, 3]),
(community_area_no:INTEGER, Examples: [21, 7, 37]),
(fbi_code_no:TEXT, Examples: [01A, 15, 14]),
(latitude:TEXT, Examples: [41.94456125, 41.92972657, 41.808168]),
(longitude:TEXT, Examples: [-87.72668181, -87.64092074, -87.63333646])
]
# Table: Neighborhood
[
(neighborhood_name:TEXT, Primary Key, Examples: [Albany Park, Altgeld Gardens, Andersonville]),
(community_area_no:INTEGER, Examples: [14, 54, 77])
]
# Table: District
[
(district_no:INTEGER, Primary Key, Examples: [1, 2, 3]),
(district_name:TEXT, Examples: [Central, Wentworth, Grand Crossing]),
(address:TEXT, Examples: [1718 South State Street]),
(zip_code:INTEGER, Examples: [60616, 60609, 60637]),
(commander:TEXT, Examples: [Jake M. Alderden, Joshua Wallace, Eve T. Quarterman]),
(email:TEXT, Examples: [ CAPS001District@chicagopolice.org]),
(phone:TEXT, Examples: [312-745-4290, 312-747-8366, 312-747-8201]),
(fax:TEXT, Examples: [312-745-3694, 312-747-5396, 312-747-5479]),
(tty:TEXT, Examples: [312-745-3693, 312-747-6656, 312-747-9168]),
(twitter:TEXT, Examples: [ ChicagoCAPS01,  ChicagoCAPS02,  ChicagoCAPS03])
]
【Foreign keys】
Crime.ward_no=Ward.ward_no
Crime.iucr_no=IUCR.iucr_no
Crime.district_no=District.district_no
Crime.community_area_no=Community_Area.community_area_no
Crime.fbi_code_no=FBI_Code.fbi_code_no
Neighborhood.community_area_no=Community_Area.community_area_no

    【Question】
    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?

    【Evidence】
    

    Please read and understand the database schema carefully, and generate an executable SQL based on the user's question and evidence. 

SQL: 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'