year chairperson
year
chairperson
minimum_number minimum_parsed minimum_year maximum_number maximum_parsed maximum_year
timespan text
1905-1911 t.v. sivaraopantulu
for how many consecutive years was challa narasimha naidu the chairperson ?
IN WRB JJ JJ NNS VBD-AUX NNP NNP NNP DT NNP .
4
select c1_maximum_year - c1_minimum_year from w where c2 = 'challanarasimhanaidu'