Shell Programming and Scripting

Established in 1905 , Las Vegas officially became a city in 1911 . 
With the growth that followed , at the close of the century Las Vegas was the most populous American city founded in the 20th century ( a distinction held by Chicago in the 19th century ) . 
On the other hand, Las Vegas also has the highest number of churches per capita of any major U.S. city .

ccomp (city -10, Established -1)
prep_in (Established -1, 1905 -3)
nn (Vegas -6, Las -5)
nsubj (city -10, Vegas -6)
advmod (city -10, officially -7)
cop (city -10, became -8)
det (city -10, a -9)
prep_in (city -10, 1911 -12)

det (growth -3, the -2)
prep_with (city -20, growth -3)
rel (followed -5, that -4)
rcmod (growth -3, followed -5)
det (close -9, the -8)
prep_at (followed -5, close -9)
det (century -12, the -11)
prep_of (close -9, century -12)
nn (Vegas -14, Las -13)
nsubj (city -20, Vegas -14)
cop (city -20, was -15)
det (city -20, the -16)
advmod (populous -18, most -17)
amod (city -20, populous -18)
amod (city -20, American -19)
partmod (city -20, founded -21)
det (century -25, the -23)
amod (century -25, 20th -24)
prep_in (founded -21, century -25)
det (distinction -28, a -27)
dep (century -25, distinction -28)
partmod (distinction -28, held -29)
agent (held -29, Chicago -31)
det (century -35, the -33)
amod (century -35, 19th -34)
prep_in (held -29, century -35)

det (hand -4, the -2)
amod (hand -4, other -3)
prep_on (has -9, hand -4)
nn (Vegas -7, Las -6)
nsubj (has -9, Vegas -7)
advmod (has -9, also -8)
det (number -12, the -10)
amod (number -12, highest -11)
dobj (has -9, number -12)
prep_of (number -12, churches -14)
prep_per (churches -14, capita -16)
det (city -21, any -18)
amod (city -21, major -19)
nn (city -21, U.S. -20)
prep_of (capita -16, city -21)

ccomp[column1] (city[column2] -10,[column3] Established[column4] -1)[coulmn5]

Established|ccomp in|empty 1905|prep_in ,| Las|nn Vegas|nsubj officially|advmod became|cop a|det city|empty in|empty 1911|prep_in .|
With|empty the|det growth|prep_with that|rel followed|rcmod ,| at|empty the|det close|prep_at of|empty the|det century|prep_of Las|nn Vegas|nsubj was|cop the|det most|advmod populous|amod American|amod city|empty founded|partmod in|empty the|det 20th|amod century|prep_in (| a|det distinction|dep held|partmod by|empty Chicago|agent in|empty the|det 19th|amod century|prep_in )| .|
On|empty the|det other|amod hand|prep_on ,| Las|nn Vegas|nsubj also|advmod has|empty the|det highest|amod number|dobj of|empty churches|prep_of per|empty capita|prep_per of|empty any|det major|amod U.S.|nn city|prep_of .|

#!/usr/bin/perl

open FILE1, '<', buf1 or die "$!";
open FILE2, '<', buf2 or die "$!";
while (<FILE1>) {
	my @words = grep {$_ ne ' ' and $_ ne '' and $_ ne "\n" } split /([,.()]|(?: ))/;
	while (my $word = shift @words) {
	my $empty = 0;
		while (<FILE2>) {
			my ($col_1, $col_4) = (split)[0,3];
			if ($word eq $col_4) {
				$empty = 0;
				print "$word|$col_1 ";
				last;
			} else {
				$empty = 1;
			}
		}
		if ($empty) {
			if ($word =~ /^\w/) {
				print "$word|empty ";
			} else {
				print "$word| ";
			}
		}

		seek(FILE2,1,0);
	}
	print "\n";
}

close FILE1;
close FILE2;

Number found where operator expected at first_file.txt line 1, near "in 1911."
        (Do you need to predeclare in?)
Semicolon seems to be missing at first_file.txt line 1.
Bareword found where operator expected at first_file.txt line 2, near "20th"
        (Missing operator before th?)
Number found where operator expected at first_file.txt line 2, near "the 19"
        (Do you need to predeclare the?)
Bareword found where operator expected at first_file.txt line 2, near "19th"
        (Missing operator before th?)
syntax error at first_file.txt line 1, near "in 1911."
Execution of first_file.txt aborted due to compilation errors.