<?php

$animal = [
    "vertebrado" => [
        "ave" => [
            "carnivoro"=>"aguia",
            "onivoro"=>"pomba"
            ],
        "mamifero"=>[
            "onivoro"=>"homem",
            "herbivoro"=>"vaca"
            ]
        ],        
"invertebrado" => [
        "inseto"=>[
            "hematofago"=>"pulga",
            "herbivoro"=>"lagarta"
            ],
        "anelideo"=>[
            "hematofago"=>"sanguessuga",
            "onivoro"=>"minhoca"
            ]
        ]
    ];

$descricao1 = trim(fgets(STDIN));
$descricao2 = trim(fgets(STDIN));
$descricao3 = trim(fgets(STDIN));

echo $animal[$descricao1][$descricao2][$descricao3] . PHP_EOL;