Replaced the previous answer. This does the trick nice and tidy
object MyAnnotator extends ThreadLocal[StanfordCoreNLP] {
val props = new Properties()
props.put("annotators", "tokenize,ssplit,pos,lemma,parse")
props.put("ssplit.newlineIsSentenceBreak", "two")
props.put("parse.maxlen", "40")
override def initialValue = new StanfordCoreNLP(props)
}