( They ( ( worked ( really ( hard ( to ( ( make ( those telescopes ) ) ( into ( useful instruments ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD worked) (ADJP (RB really) (JJ hard) (S (VP (TO to) (VP (VB make) (NP (DT those) (NNS telescopes)) (PP (IN into) (NP (JJ useful) (NNS instruments)))))))) (. .)))
They worked really hard to make those telescopes into useful instruments.
(ROOT (S (NP (DT A) (NN telescope)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB make) (S (NP (NP (NNS objects)) (PP (IN in) (NP (NN space)))) (VP (VB appear) (ADVP (RBR closer))))))))) (. .)))
A telescope is used to make objects in space appear closer.