I am trying to use Stanford TokensRegex to design patterns. I am attempting to catch "A manager may manage at most 2 branches" where it has been mentioned once in the text, however I failed to get it. below is my code

String file="A store has many branches. Each branch must be managed by at most 1 manager. A manager may manage at most 2 branches. The branch sells many products. Product is sold by many branches. Branch employs many workers. The labour may process at most 10 sales. It can involve many products. Each Product includes product_code, product_name, size, unit_cost and shelf_no. A branch is uniquely identified by branch_number. Branch has name, address and phone_number. Sale includes sale_number, date, time and total_amount. Each labour has name, address and telephone. Worker is identified by id’.";

Properties props = new Properties();

props.put("annotators", "tokenize, ssplit, pos, lemma, ner, parse, dcoref");

StanfordCoreNLP pipeline = new StanfordCoreNLP(props);

// read some text in the text variable

// create an empty Annotation just with the given text

Annotation document = new Annotation(file);

// run all Annotators on this text

pipeline.annotate(document);

// these are all the sentences in this document

// a CoreMap is essentially a Map that uses class objects as keys and has values with custom types

List sentences = document.get(CoreAnnotations.SentencesAnnotation.class);

for(CoreMap sentence: sentences)

{

TokenSequencePattern pattern = TokenSequencePattern.compile("A manager may manage at most 2 branches");

String sentence1=sentence.toString();

String[] tokens = sentence1.split(" ");

TokenSequenceMatcher matcher = pattern.getMatcher(document.get (CoreAnnotations.SentencesAnnotation.class));

while( matcher.find()){

JOptionPane.showMessageDialog(rootPane, "It has been found");

}

}

Please suggest any books, articles which could help me in learning to design patterns in Stanford TokensRegex within Stanford CoreNLP.