( Feel ( ( first-hand ( what ( ( radical ( idea Galileo ) ) ( discovered ( without ( a telescope ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Feel)) (VP (VBZ first-hand) (SBAR (WHNP (WP what)) (S (NP (JJ radical) (NN idea) (NNP Galileo)) (VP (VBD discovered) (PP (IN without) (NP (DT a) (NN telescope))))))) (. .)))
Feel first-hand what radical idea Galileo discovered without a telescope.
(ROOT (S (NP (NNP Galileo)) (VP (VBD built) (NP (DT the) (JJ first) (NN telescope))) (. .)))