user: Question: What is the highest Z (p) when arsenic is the element, and the N (n) is more than 42
Columns: ['Element', 'Nuclide', 'Z ( p )', 'N ( n )', 'isotopic mass ( u )']
Types: ['text', 'text', 'real', 'real', 'text']
Sample row: ['beryllium', '9 Be', 4.0, 5.0, '9.012 182(3)']
SQL:

assistant: SELECT MAX("Z ( p )") FROM "Table" WHERE "Element" = 'arsenic' AND "N ( n )" > 42.0;