( ( ( ( ( no ( liquid nitrogen ) ) necessary ) & ) ( detector ( ready ( to ( use ( in ( ( < 20 ) seconds ) ) ) ) ) ) ) ; )
(ROOT (NP (NP (NP (NP (DT no) (JJ liquid) (NN nitrogen)) (ADJP (JJ necessary))) (CC &) (NP (NP (NN detector)) (ADJP (JJ ready) (S (VP (TO to) (VP (VB use) (PP (IN in) (NP (QP (CD <) (CD 20)) (NNS seconds))))))))) (: ;)))
no liquid nitrogen necessary &amp; detector ready to use in &lt;20 seconds;
(ROOT (S (NP (NN Liquid) (NN nitrogen)) (VP (VBZ is) (VP (VBN used) (PP (IN for) (NP (NP (VBG cooling) (NNS detectors)) (PP (IN of) (NP (JJ infrared) (NNS telescopes))))))) (. .)))