Find the first name of students who are living in the dorm that has most number of amenities.
CREATE TABLE dorm_amenity (amenid VARCHAR); CREATE TABLE lives_in (stuid VARCHAR, dormid VARCHAR); CREATE TABLE dorm (dormid VARCHAR); CREATE TABLE student (fname VARCHAR, stuid VARCHAR); CREATE TABLE has_amenity (dormid VARCHAR, amenid VARCHAR)
[SQL] SELECT T1.fname FROM student AS T1 JOIN lives_in AS T2 ON T1.stuid = T2.stuid WHERE T2.dormid IN (SELECT T2.dormid FROM dorm AS T3 JOIN has_amenity AS T4 ON T3.dormid = T4.dormid JOIN dorm_amenity AS T5 ON T4.amenid = T5.amenid GROUP BY T3.dormid ORDER BY COUNT(*) DESC LIMIT 1) [/SQL]