/usr/lib/swi-prolog/xpce/bitmaps/question.bm is in swi-prolog-x 6.6.4-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | #define question.bm_width 16
#define question.bm_height 16
static char question.bm_bits[] = {
0xc0, 0x01, 0x60, 0x07, 0x10, 0x0c, 0x18, 0x0c, 0x08, 0x06, 0x00, 0x03,
0x80, 0x01, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0x00, 0x00,
0xc0, 0x00, 0xe0, 0x01, 0xc0, 0x00, 0x00, 0x00};
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