use strict;
use warnings;
use Data::Dumper;
use Lingua::EN::NamedEntity;

my @entities = extract_entities("El Nino is the warm phase of the El Niņo Southern Oscillation (commonly called ENSO) and is associated with a band of warm ocean water that develops in the central and east-central equatorial");
print Dumper (@entities);

Output

$ perl entity.pl
$VAR1 = {
          'count' => 1,
          'scores' => {
                        'person' => 4,
                        'place' => 1,
                        'organisation' => 3
                      },
          'entity' => 'El Ni',
          'class' => 'person'
        };
$VAR2 = {
          'count' => 1,
          'scores' => {
                        'organisation' => 2,
                        'person' => 9,
                        'place' => 1
                      },
          'entity' => 'El Nino',
          'class' => 'person'
        };
$VAR3 = {
          'class' => 'person',
          'entity' => 'Southern Oscillation',
          'scores' => {
                        'organisation' => 2,
                        'place' => 1,
                        'person' => 4
                      },
          'count' => 1
        };