opennlp-similarity/src/main/java/opennlp/tools/similarity/apps/ContentGenerator.java [146:178]:
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				boolean bAccept = true;
				for (String w : qs) {
					if (w.toLowerCase().equals(w)) // idf only two words then
					// has to be person name,
					// title or geolocation
					{
						bAccept = false;
						break;
					}
				}
				if (!bAccept)
					continue;
			}

			query = new StringBuilder(query.toString().trim().replace(" ", " +"));
			query.insert(0, " +");

			queryArrayStr.add(query.toString());

		}
		if (queryArrayStr.size() < 1) { // release constraints on NP down to 2
			// keywords
			for (ParseTreeChunk ch : nPhrases) {
				StringBuilder query = new StringBuilder();
				int size = ch.getLemmas().size();

				for (int i = 0; i < size; i++) {
					if (ch.getPOSs().get(i).startsWith("N")
							|| ch.getPOSs().get(i).startsWith("J")) {
						query.append(ch.getLemmas().get(i)).append(" ");
					}
				}
				query = new StringBuilder(query.toString().trim());
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opennlp-similarity/src/main/java/opennlp/tools/similarity/apps/RelatedSentenceFinder.java [217:249]:
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				boolean bAccept = true;
				for (String w : qs) {
					if (w.toLowerCase().equals(w)) // idf only two words then
					// has to be person name,
					// title or geolocation
					{
						bAccept = false;
						break;
					}
				}
				if (!bAccept)
					continue;
			}

			query = new StringBuilder(query.toString().trim().replace(" ", " +"));
			query.insert(0, " +");

			queryArrayStr.add(query.toString());

		}
		if (queryArrayStr.size() < 1) { // release constraints on NP down to 2
			// keywords
			for (ParseTreeChunk ch : nPhrases) {
				StringBuilder query = new StringBuilder();
				int size = ch.getLemmas().size();

				for (int i = 0; i < size; i++) {
					if (ch.getPOSs().get(i).startsWith("N")
									|| ch.getPOSs().get(i).startsWith("J")) {
						query.append(ch.getLemmas().get(i)).append(" ");
					}
				}
				query = new StringBuilder(query.toString().trim());
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