name college years reign
name
college
years
reign
minimum_number minimum_parsed minimum_year maximum_number maximum_parsed maximum_year
text text timespan text
seretse khama balliol 1945 king of the bagammangwato people (1925); afterwards first president of botswana (1966-1980)
how long was harald v of norway the king of norway at the university of oxford ?
WRB RB VBD-AUX NNP NNP IN NNP DT NNP IN NNP IN DT NNP IN NNP .
2 years
select c3_maximum_year - c3_minimum_year from w where c1 = 'harald v of norway'