Table:
text: Claisebrook railway station
Platforms
Platforms
Stop_no_ Platform Line Stopping_pattern Destination
[2778] Claisebrook Station platforms [2778] Claisebrook Station platforms [2778] Claisebrook Station platforms [2778] Claisebrook Station platforms [2778] Claisebrook Station platforms
99021 1 Armadale / Thornlie All stations Perth
99022 2 Armadale / Thornlie All stations, B, C, T Armadale or Thornlie
99023 3 Midland All stations Perth
99024 4 Midland All stations, A, B, P Midland

Question: What is the stopping pattern at Claisebrook station when platform 4 is on?

Question: What is the stop number if the destination is Perth and if the Midland line is at Claisebrook station?