#!/usr/bin/perl -w
use strict;
use Lingua::EN::NamedEntity;

$/ = undef;
my $text = <DATA>;

my @entities = extract_entities($text);
my @unwanted_entities = qw( Monday Tuesday Wednesday Thursday Friday Saturday
        Sunday);

for (@entities) {
    my $entity = ${$_}{entity};
    if ( grep { $_ eq $entity } @unwanted_entities ) {
        print "Skipping unwanted entity: $entity\n";
    }
    else {
        print "Valid entity: $entity\n"
    }
}