# nation qualification tournament place in qt sailor
#
nation
qualification tournament
place in qt
sailor
number
number
list length
number text text number <c, text>
1 china host country 1 robert scheidt, bruno prada
what is the average number of sailors for each country during the worlds qualification tournament ?
WP VBD-AUX DT JJ NN IN NNS IN DT NN IN DT NNS NN NN .
2
select avg ( c5_length ) from w where c4 not null