I'm going slightly mad

WAT.rb

require 'nokogiri'
require 'open-uri'

uri = "http://data.gov.uk/dataset/water-framework-directive-lake-waterbodies-wfs"

doc = Nokogiri::HTML(open(uri))
        
doc.search('link[rel=alternate]').each do |e|
  if e[:type] == "application/rdf+xml"
    puts "rdf should be #{e[:href]}"
    rdf = e[:href]
  end
end

# rdf should be http://data.gov.uk/dataset/water-framework-directive-lake-waterbodies-wfs.rdf

# > rdf
# NameError: undefined local variable or method `rdf' for main:Object

rdf = "foo"

# > rdf
# => "foo" 

# WAT