I got it. Thank you!
In a very ugly Perl, I translated it so:
my @sentences1 = map { /(\w+)\s+searching/; [$1, $_] } @sentences
+;
my @sentences2 = sort { $a->[0] cmp $b->[0] } @sentences1;
my @sentences3 = map {$_->[1]} @sentences2;
foreach (@sentences3) {
print $_;
}
...just to lear Perl
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