year number name
year
number
name
minimum_number minimum_parsed minimum_year maximum_number maximum_parsed maximum_year
timespan text text
1884-1885 7 lukin homphrey irving (first)
how many years does the table cover in total ?
WRB JJ NNS VBD-AUX DT NN NN IN NN .
128
Keyword Keyword Keyword Column Keyword Keyword Keyword Keyword Column Keyword Keyword Keyword
select max ( c1_maximum_year ) - min ( c1_minimum_year ) from w
Column Column Column None None None None Column Column None
c1_minimum_year c1_minimum_year c1_minimum_year c1_minimum_year c1_minimum_year