/* SWERC'97 - Island of Logic */
/*  11/6/97 - Matthias Ruhl   */

#include <stdio.h>

#define DIVINE 0
#define EVIL   1
#define HUMAN  2
#define DAY   0
#define NIGHT 1

#define MAXPERSONS 5
#define STATENUM 3*3*3*3*3*2

FILE *inp;
char state[STATENUM];

/* Auxiliary functions */

int type(int state, int p)
{
  state /= 2;
  while(p--) state /= 3;
  return (state % 3);
}

int lying(int state, int p)
{
  int daynight,t;

  daynight = state % 2;
  t = type(state,p);
  return (t == EVIL || (t == HUMAN && daynight == NIGHT));
}

void init()
{
  int i;

  for(i=0;i<STATENUM;i++) state[i] = 1;
}

void scanline()
{
  int i,neg,speaker,target,t,true;
  char s[50];

  fgets(s,50,inp);
  speaker = s[0] - 'A';

  /* Case 1: It is day or night. */
  if(s[3] == 'I' && s[4] == 't')
    {
      for(i=0;i<STATENUM;i++)
	{
	  true = ((i%2 == DAY && s[9] == 'd') ||
		  (i%2 == NIGHT && s[9] == 'n'));
	  if(lying(i,speaker) == true) state[i] = 0;
	}
      return;
    }

  if(s[5] == 'a')
    target = speaker;    /* speaking about oneself */
  else
    target = s[3] - 'A'; /* speaking about someone else */

  neg = (s[8] == 'n'); /* statement negated? */

  switch(s[8+4*neg])
    {
    case 'd': t = DIVINE; break;
    case 'e': t = EVIL; break;
    case 'h': t = HUMAN; break;
    case 'l':
      for(i=0;i<STATENUM;i++)
	{
	  true = neg ^ lying(i,target);
	  if(lying(i,speaker) == true) state[i] = 0;
	}
      return;
    }
  for(i=0;i<STATENUM;i++)
    {
      true = neg ^ (type(i,target) == t);
      if(lying(i,speaker) == true) state[i] = 0;
    }
  return;
}

void output()
{
  int deduction,i,j,possible[MAXPERSONS],daynight;
  static int caseno = 1;
  char *names[] = { "divine", "evil", "human" };

  printf("Conversation #%d\n",caseno++);

  for(i=0;i<MAXPERSONS;i++) possible[i] = -1;
  daynight = -1;

  for(i=0;i<STATENUM;i++)
    if(state[i])
      {
	if(daynight != -1 && daynight != i%2) daynight = -2;
	else if(daynight == -1) daynight = i%2;
	for(j=0;j<MAXPERSONS;j++)
	  {
	    if(possible[j] != -1 && possible[j] != type(i,j)) possible[j] = -2;
	    else if(possible[j] == -1) possible[j] = type(i,j);
	  }
      }
  if(daynight == -1) { printf("This is impossible.\n\n"); return; }
  
  deduction = 0;
  for(i=0;i<MAXPERSONS;i++)
    if(possible[i] >= 0)
      {
	printf("%c is %s.\n",i+'A',names[possible[i]]);
	deduction = 1;
      }
  if(daynight >= 0)
    { printf("It is %s.\n",daynight==DAY?"day":"night"); deduction = 1; }
  if(!deduction) printf("No facts are deducible.\n");
  printf("\n");
}

int main()
{
  int i,n;

  inp = fopen("island.in","r");
  while(fscanf(inp,"%d ",&n) && n != 0)
    {
      init();
      for(i=0;i<n;i++) scanline();
      output();
    }
  fclose(inp);
  return 0;
}