year competition venue position event notes
year
competition
venue
position
event
notes
number
address
first second first_number
number
number text address rank(text) text unitnum
1992 carifta games (u20) nassau, bahamas 21st (q) discus throw 37.86 m
how many years are listed in this competition record chart ?
WRB JJ NNS VBD-AUX VBN IN DT NN NN NN .
7
Keyword Keyword Keyword Keyword Column Keyword Keyword Keyword
select count ( distinct c1 ) from w
Keyword Keyword Column None None None None None None None None
['agg', 'agg_count'] ['agg', 'agg_count'] c1