team name leagues base year started year ended notable riders
team name
leagues
base
year started
year ended
notable riders
list length
address
first second first_minimum_number first_minimum_parsed first_minimum_year first_maximum_number first_maximum_parsed first_maximum_year
list length list_number
list length
text <cf,text> address timespan(text) <c, number> <ca, text>
aldershot shots national league division three tongham greyhound stadium 1964 (closed 1977, reopened 1997) 1960 ken le breton
what is the total number of teams that no longer operate ?
WP VBD-AUX DT JJ NN IN NNS IN DT JJR VB .
49
select count ( c1 ) from w