Chinastark/bird_dataset huggingface dataset:
Column: address
Data format: text
Description: the address of this legislator
Column: bioguide
Name: bioguide id
Data format: text
Description: The alphanumeric ID for this legislator
Column: caucus
Data format: text
Description: caucus
Value description: For independents, the party that the legislator caucuses with, using the same values as the party field. Omitted if the legislator caucuses with the party indicated in the party field. When in doubt about the difference between the party and caucus fields, the party field is what displays after the legislator's name (i.e. "(D)") but the caucus field is what normally determines committee seniority. This field was added starting with terms for the 113th Congress.
Column: chamber
Data format: text
Description: chamber
Value description: â¢ senate
â¢ house
Column: class
Data format: real
Description: class
Value description: For senators, their election class (1, 2, or 3). 
commonsense evidence:
only senator has class, if the value is null or empty, it means this legislator is not senator.
Column: contact_form
Data format: text
Description: The website URL of the contact page on the legislator's official website
Column: district
Data format: real
Description: district
Value description: For representatives, the district number they are serving from. 
commonsense evidence:
if null or empty, they are not representatives.
Column: end
Data format: text
Description: the end of the term
Value description: end: The date the term ended (because the Congress ended or the legislator died or resigned, etc.). End dates follow the Constitutional end of a term. Since 1935, terms begin and end on January 3 at noon in odd-numbered years, and thus a term end date may also be a term start date. Prior to 1935, terms began on March 4 and ended either on March 3 or March 4. The end date is the last date on which the legislator served this term. Unlike the start date, whether Congress was in session or not does not affect the value of this field.
Column: fax
Data format: text
Description: The fax number of the legislator's Washington, D.C. office
Value description: only valid if the term is current
Column: last
Data format: text
Description: the last known number
Column: name
Data format: text
Value description: not useful
Column: office
Data format: text
Description: office 
Value description: only valid if the term is current, otherwise the last known office
Column: party
Data format: text
Description: The political party of the legislator.
Value description: commonsense evidence:
If the legislator changed parties, this is the most recent party held during the term and party_affiliations will be set. Values are typically "Democrat", "Independent", or "Republican". The value typically matches the political party of the legislator on the ballot in his or her last election, although for state affiliate parties such as "Democratic Farmer Labor" we will use the national party name ("Democrat") instead to keep the values of this field normalized.
Column: party_affiliations
Name: party affiliations
Data format: text
Description: This field is present if the legislator changed party or caucus affiliation during the term.
Value description: The value is a list of time periods, with start and end dates, each of which has a party field and a caucus field if applicable, with the same meanings as the main party and caucus fields. The time periods cover the entire term, so the first start will match the term start, the last end will match the term end, and the last party (and caucus if present) will match the term party (and caucus).
Column: phone
Data format: text
Description: The phone number of the legislator's Washington, D.C. office
Value description: only valid if the term is current, otherwise the last known number
Column: relation
Data format: text
Value description: not useful
Column: rss_url
Name: Really Simple Syndication URL
Data format: text
Description: The URL to the official website's RSS feed
Column: start
Data format: text
Description: The date legislative service began: the date the legislator was sworn in, if known, or else the beginning of the legislator's term. 
Value description: Since 1935 regularly elected terms begin on January 3 at noon on odd-numbered years, but when Congress does not first meet on January 3, term start dates might reflect that swearing-in occurred on a later date. (Prior to 1935, terms began on March 4 of odd-numbered years, see here.)
Column: state
Data format: text
Description: state code
Value description: commonsense evidence:
AK: Alaska 
AL: Alabama 
AR: Arkansas 
AZ: Arizona 
CA: California 
CO: Colorado 
CT: Connecticut 
DE: Delaware 
FL: Florida 
GA: Georgia 
HI: Hawaii 
IA: Iowa 
ID: Idaho 
IL: Illinois 
IN: Indiana 
KS: Kansas 
KY: Kentucky 
LA: Louisiana 
MA: Massachusetts 
MD: Maryland 
ME: Maine 
MI: Michigan 
MN: Minnesota 
MO: Missouri 
MS: Mississippi 
MT: Montana 
NC: North Carolina 
ND: North Dakota 
NE: Nebraska 
NH: New Hampshire 
NJ: New Jersey
9 divisions of states in us: (please mention)
https://www2.census.gov/geo/pdfs/maps-data/maps/reference/us_regdiv.pdf
Column: state_rank
Data format: text
Description: whether they are the "junior" or "senior" senator
Value description: only valid if the term is current, otherwise the senator's rank at the time the term ended
commonsense evidence:
only senator has this value
Column: title
Data format: text
Description: title of the legislator
Column: type
Data format: text
Description: The type of the term.
Value description: Either "sen" for senators or "rep" for representatives and delegates to the House
Column: url
Data format: text
Description: The official website URL of the legislator 
Value description: only valid if the term is current