gistfile1.txt

mysql> select count(distinct donee) as numDonees from donations where influencer is not NULL and cause_area REGEXP "AI risk";
+-----------+
| numDonees |
+-----------+
|         3 |
+-----------+
1 row in set (0.01 sec)

mysql> select count(distinct donee) as numDonees from donations where influencer is NULL and cause_area REGEXP "AI risk";
+-----------+
| numDonees |
+-----------+
|         9 |
+-----------+
1 row in set (0.03 sec)

mysql> select count(distinct donee) as numDonees from donations where cause_area REGEXP "AI risk"; 
+-----------+
| numDonees |
+-----------+
|        11 |
+-----------+
1 row in set (0.03 sec)