rtokens: His escape at the zoo caused outrage in Britain .
pos: NNP VBD VBN TO DT RBR VB NN RBR DT NN IN DT JJ NN .
tokens: Holland was moved to a more secure centre earlier this year after a similar incident .
ltokens: Police launched a nationwide search on Thursday after he disappeared during an unsupervised trip to the toilet while visiting a popular zoo and theme park south of London .