#!/usr/bin/perl

use feature qw/say/;
use strict;
use warnings;

my $s;
my @arr;

while(<>) {
  chomp $_;
  $s .= $_ . " ";
}
@arr = $s =~ m/[A-Z].+?[.;](?=[^.;][A-Z]|\s*$)/g;
foreach (@arr) {
    say;
}