ischildof(t1.t1) (Should be 7 tasks)

No.	Name	Start	End
No.	Name	Start	End	1.	Task 1.1.3.1	2003-01-01 00:00	2003-01-01 00:00
2.	Task 1.1.3	2003-01-01 00:00	2003-01-01 00:00
3.	Task 1.1.2	2003-01-01 00:00	2003-01-01 00:00
4.	Task 1.1.1.2	2003-01-01 00:00	2003-01-01 00:00
5.	Task 1.1.1.1	2003-01-01 00:00	2003-01-01 00:00
6.	Task 1.1.1	2003-01-01 00:00	2003-01-01 00:00
7.	Task 1.1	2003-01-01 00:00	2003-01-01 00:00