Table:
text: List of Hewitts and Nuttalls in England
Nuttall mountains in England by height
Group A
Peak Height_m Prom_m Class_ Parent
Grasmoor 852 519 Marilyn Scafell Pike
Crag Hill 839 117 Hewitt Grasmoor
Grisedale Pike 791 189 Marilyn Grasmoor
Sail 773 32 Hewitt Crag Hill
Wandope 772 30 Hewitt Crag Hill
Hopegill Head 770 97 Hewitt Grisedale Pike
Sand Hill 756 18 Nuttall Hopegill Head
Dale Head 753 397 Marilyn Great Gable
Hobcarton Crag 739 37 Hewitt Grisedale Pike
Robinson 737 161 Marilyn Dale Head
Hindscarth 727 71 Hewitt Dale Head
Whiteside east top 719 39 Hewitt Hopegill Head
Whiteside 707 18 Nuttall Whiteside east top
Ladyside Pike 703 28 Nuttall Hopegill Head
Scar Crags 672 55 Hewitt Crag Hill

Question: What class is Peak Sail if it has a prom greater than 30 under the mountains of the list of the Hewitts and Nuttalls in England, Group A by height?