#!/usr/bin/env perl

use strict;
use warnings;

my %data;

while (<DATA>) {
    next if $. == 1;
    chomp;
    next unless length;
    my ($k, $v) = split;
    $data{$k} = $v;
}

# To test result
use Data::Dumper;
print "*** Hash ***\n";
print Dumper(\%data);
print "*** Keys ***\n";
print "$_\n" for keys %data;
print "*** Values ***\n";
print "$_\n" for values %data;

__DATA__
GeneName    GeneType

APOL4   protein_coding

CYP2C8  protein_coding

NAALADL2    protein_coding

NANOS3  protein_coding

C20orf204   protein_coding

MIR429  miRNA

MIR200A miRNA

MIR200B miRNA