Among the countries whose agriculture takes up more than 40% of its GDP, how many of them have less than 2 mountains?
SELECT COUNT(T3.Country) FROM ( SELECT T1.Country FROM economy AS T1 INNER JOIN geo_mountain AS T2 ON T1.Country = T2.Country WHERE T1.Industry < 40 GROUP BY T1.Country HAVING COUNT(T1.Country) < 2 ) AS T3