high school join
year from left league left to
high school
join year
from
left
league left to
list length list_number
list length list_number
list length
text <n,number> text <n,number> <n,text>
ainsworth 1954 county c league 1961 big nine conference
what is the total number of schools to join before 1960 ?
WP VBD-AUX DT JJ NN IN NNS TO VB IN CD .
11
select count ( c1 ) from w where c2_list_number < 1960