rank city passengers ranking airline
rank
city
passengers
ranking
airline
number
address
number
number
list length
number address number number <c, text>
1 united states, los angeles 14749 4 alaska airlines
how many cities from canada are on this list ?
WRB JJ NNS IN NNP VBD-AUX IN DT NN .
5
select count ( c2 ) from w where c2_address = 'canada'