( It ( ( has ( to ( ( ( ( be testable ) , ) and ) ( falsifiable ( to ( be science ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ has) (S (VP (TO to) (VP (VP (VB be) (ADJP (JJ testable))) (, ,) (CC and) (VP (VB falsifiable) (S (VP (TO to) (VP (VB be) (NP (NN science)))))))))) (. .)))
It has to be testable, and falsifiable to be science.
(ROOT (S (NP (DT A) (NN fact) (CC or) (NN question)) (VP (VBZ is) (ADVP (RB only)) (VP (VBN considered) (NP (NN science)) (SBAR (IN if) (S (NP (PRP it)) (VP (VBZ is) (ADJP (JJ testable))))))) (. .)))