#include <stdio.h>
#include <iostream.h>
#include <string>
using std::string;

char T[256][100]; // T[i] stores sequence of up to 100 characters
// that define type i (where i is the ASCII code of the type name)
// each elt of the array is either the name of a type or i for int,
// r for real, c for char.  Note structs cannot contain i/r/c
int n[256]; // n[i] stores 0 if type i is not a struct; otherwise
// number of elts in its struct.

bool isSimple(char a) { // is variable name a a simple type (int/real/char)?
  return (T[a][0]=='i' || T[a][0]=='r' || T[a][0]=='c');
}
bool isStruct(char a) { // is variable name a a structure?
  return (n[a] > 0);
}
bool isPtr(char a) { // is variable name a just a pointer to another name?
  return !(isSimple(a) || isStruct(a));
}

bool test(char a, char b) { // a,b are type names
  if (isPtr(a))
    return test(T[a][0], b);
  if (isSimple(a) && isSimple(b))
    return (T[a][0]==T[b][0]);
  else if (isSimple(a) && isStruct(b))
    return 0;
  else if (isStruct(a) && isStruct(b)) {
    if (n[a] != n[b])
      return 0;
    else {
      bool res = 1;
      for (int i = 0; i < n[a]; i++)
	res = res && test(T[a][i],T[b][i]);
      return res;
    }
  }
  else
    return test(b,a);
}

int main() {
  string instr;
  cin >> instr;
  while (instr != "#") {
    while (instr != "?" && instr != "*") { // read type definitions
      char name;
      cin >> name; // type being defined
      string junk;
      cin >> junk; // skip =
      char next;
      cin >> next;
      if (next == 'i' || next == 'c' || next == 'r') { // beginning of int
	cin >> junk; // throw away "nt" or "har" or "eal"
	T[name][0]=next;
	n[name]=0;
      }
      else if (next != 's') { // simple type 
	T[name][0]=next;
	n[name]=0;
      }
      else { // struct
	cin >> junk; // throw away truct
	cin >> next; // throw away (
	cin >> next;
	int i = 0;
	while (next != ')') {
	  T[name][i] = next;
	  i++;
	  cin >> next;
	}
	n[name] = i;
      }
      cin >> instr;
    }
    while (instr == "?") {
      char a,b;
      cin >> a;
      cin >> b;
      cout << (test(a,b) ? "equivalent\n" : "not equivalent\n");
      cin >> instr;
    }
    if (instr == "*") {
      cout << "\n";
      cin >> instr;
    }
  }
}