Which students participate in both Canoeing and Kayaking as their activities? Tell me their student ids.
SELECT T1.stuid FROM participates_in AS T1 JOIN activity AS T2 ON T2.actid  =  T2.actid WHERE T2.activity_name  =  'Canoeing' INTERSECT SELECT T1.stuid FROM participates_in AS T1 JOIN activity AS T2 ON T2.actid  =  T2.actid WHERE T2.activity_name  =  'Kayaking'
SELECT T1.stuid FROM participates_in AS T1 JOIN activity AS T2 ON T2.actid  =  T2.actid WHERE T2.activity_name  =  'Canoeing' INTERSECT SELECT T1.stuid FROM participates_in AS T1 JOIN activity AS T2 ON T2.actid  =  T2.actid WHERE T2.activity_name  =  'Kayaking'
[{'stuid': 1001}, {'stuid': 1002}, {'stuid': 1003}, {'stuid': 1004}, {'stuid': 1005}, {'stuid': 1006}, {'stuid': 1007}, {'stuid': 1008}, {'stuid': 1009}, {'stuid': 1010}, {'stuid': 1011}, {'stuid': 1012}, {'stuid': 1014}, {'stuid': 1015}, {'stuid': 1016}, {'stuid': 1017}, {'stuid': 1018}, {'stuid': 1019}, {'stuid': 1020}, {'stuid': 1021}, {'stuid': 1022}, {'stuid': 1023}, {'stuid': 1024}, {'stuid': 1025}, {'stuid': 1028}, {'stuid': 1029}, {'stuid': 1030}, {'stuid': 1033}, {'stuid': 1034}, {'stuid': 1035}]