Return the number of routes with destination airport in Italy operated by the airline with name 'American Airlines'.
create table routes (dst_apid varchar, alid varchar, PRIMARY KEY (dst_apid)); create table airports (apid varchar, country varchar, PRIMARY KEY (apid)); create table airlines (alid varchar, name varchar, PRIMARY KEY (alid))
select count(*) from routes as t1 join airports as t2 on t1.dst_apid = t2.apid join airlines as t3 on t1.alid = t3.alid where t2.country = 'italy' and t3.name = 'american airlines'