regex - TokensRegex throws exception -


i have following regex working partially , need make work use cases.

regex:

([{word:/by/}][{tag:nn}]+)(/and|,/[{tag:nn}|{tag:vbg}]*)* 

the above expression works fine following:

by market , shipping market, shipping , region 

however, regex fail following:

by market 

can me writing correct regex.

updated:

following stack trace exception:

[pool-1-thread-7] info corenlp - [/0:0:0:0:0:0:0:1:64476] api call w/annotators tokenize,ssplit,pos,lemma,ner,regexner,parse,depparse,natlog,mention,coref,openie,kbp market [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator tokenize [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator ssplit [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator pos [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator lemma [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator ner [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator regexner [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator parse [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator depparse [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator natlog [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator mention [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator coref [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator openie [pool-1-thread-7] info edu.stanford.nlp.pipeline.stanfordcorenlp - adding annotator kbp java.lang.nullpointerexception @ edu.stanford.nlp.pipeline.stanfordcorenlpserver$tokensregexhandler.lambda$null$365(stanfordcorenlpserver.java:814) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.object(jsonoutputter.java:453) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.routeobject(jsonoutputter.java:352) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.lambda$object$344(jsonoutputter.java:467) @ edu.stanford.nlp.pipeline.stanfordcorenlpserver$tokensregexhandler.lambda$null$366(stanfordcorenlpserver.java:808) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.object(jsonoutputter.java:453) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.routeobject(jsonoutputter.java:352) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.routeobject(jsonoutputter.java:330) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.routeobject(jsonoutputter.java:354) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.lambda$object$344(jsonoutputter.java:467) @ edu.stanford.nlp.pipeline.stanfordcorenlpserver$tokensregexhandler.lambda$null$368(stanfordcorenlpserver.java:803) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.object(jsonoutputter.java:453) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.object(jsonoutputter.java:474) @ edu.stanford.nlp.pipeline.jsonoutputter$jsonwriter.objecttojson(jsonoutputter.java:500) @ edu.stanford.nlp.pipeline.stanfordcorenlpserver$tokensregexhandler.lambda$handle$369(stanfordcorenlpserver.java:795) @ java.util.concurrent.futuretask.run(futuretask.java:266) @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1142) @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:617) @ java.lang.thread.run(thread.java:745)


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