SELECT organized_by ,  name FROM church WHERE open_date BETWEEN 1830 AND 1840
Show the organizer and name for churches that opened between 1830 and 1840.
[Schema (values) (types)]: | wedding |  people : people_id (text) , name (number) , country (text) , is_male (text) , age (text) | church : church_id (text) , name (number) , organized_by (text) , open_date (text) , continuation_of (text) | wedding : church_id (text) , male_id (number) , female_id (text) , year (text);