<?php
/**
 * Created by PhpStorm.
 * User: emotu
 * Date: 001 01.4.2019 г.
 * Time: 22:16
 */

class Student
{
    private $firstName;
    private $lastName;
    private $age;
    private $city;

    public function __construct($firstN, $lastN, $age, $city)
    {
        $this->firstName = $firstN;
        $this->lastName = $lastN;
        $this->age = $age;
        $this->city = $city;
    }

    public function getFirstName()
    {
        return $this->firstName;
    }

    public function getLastName()
    {
        return $this->lastName;
    }

    public function getAge()
    {
        return $this->age;
    }

    public function getCity()
    {
        return $this->city;
    }
}

$persons = [];
while (true) {
    $line = readline();
    if ($line == "end") {
        break;
    }
    $current = explode(" ", $line);//towa e masiv
    $firstName = $current[0];
    $lastName = $current[1];
    $age = $current[2];
    $city = $current[3];

    if (isExisting($persons, $firstName, $lastName)) {
        $person = getStudent($persons, $firstName, $lastName);
        $person = new Student($firstName, $lastName, $age, $city);
    } else {
        $person = new Student($firstName, $lastName, $age, $city);
    }
    array_push($persons, $person);
}
$cityName = readline();
foreach ($persons as $key) {
    if ($key->getCity() == $cityName) {
        echo $key->getFirstName(), " ", $key->getLastName(), " is ", $key->getAge(), " years old." . PHP_EOL;
    }
}

function isExisting($list, $firstName, $lastName)
{
    foreach ($list as $student) {
        if ($student->getFirstName() == $firstName && $student->getLastName() == $lastName) {
            return true;
        }
        return false;
    }

}


function getStudent($list, $firstName, $lastName)
{
    $existingStudent = null;

    foreach ($list as $student) {
        if ($student->getFirstName() == $firstName && $student->getLastName() == $lastName) {
            $existingStudent = $student;
        }
        return $existingStudent;
    }

}