Learned by Reading
In Wikipedia:
Moreover, grand unified theories of particle physics suggest that there should be magnetic monopoles in the universe, which have not been found.
(Parse)
(S1 (S (ADVP (RB Moreover)) (, ,)
(NP (NP (JJ grand) (JJ unified) (NNS theories))
(PP (IN of)
(NP (NN particle) (NNS physics))))
(VP (VBP suggest)
(SBAR (IN that)
(S (NP (EX there))
(VP (MD should)
(VP (AUX be)
(NP (NP (JJ magnetic) (NNS monopoles))
(PP (IN in)
(NP (DT the) (NN universe)))
(, ,)
(SBAR (WHNP (WDT which))
(S (VP (AUX have) (RB not)
(VP (AUX been)
(VP (VBN found)))
(. .)))
In Wikipedia:
This leads to a direct prediction of the amount of monopoles in the universe today, which is about 1011 times the critical density of our universe.
(Parse)
(S1 (S (NP (DT This))
(VP (VBZ leads)
(PP (TO to)
(NP (NP (DT a) (JJ direct) (NN prediction))
(PP (IN of)
(NP (NP (DT the) (NN amount))
(PP (IN of)
(NP (NP (NNS monopoles))
(PP (IN in)
(NP (NP (DT the) (NN universe))
(NP (NN today)) (, ,)
(SBAR (WHNP (WDT which))
(S (VP (AUX is)
(NP (NP (QP (RB about) (CD 1011) (NNS times)) (DT the) (JJ critical) (NN density))
(PP (IN of)
(NP (PRP$ our) (NN universe))))
(. .)))
In Wikipedia:
Not only is that not the case, but all searches for them have so far turned out fruitless, placing stringent limits on the density of relic magnetic monopoles in the universe.
(Parse)
(S1 (S (S (CONJP (RB Not) (RB only))
(VP (AUX is)
(SBAR (IN that) (FRAG (RB not)
(NP (DT the) (NN case)))
(, ,) (CC but)
(S (NP (NP (DT all) (NNS searches))
(PP (IN for)
(NP (PRP them))))
(VP (AUX have) (ADVP (RB so) (RB far))
(VP (VBN turned) (PRT (RP out))
(NP (JJ fruitless)) (, ,)
(S (VP (VBG placing)
(NP (NP (JJ stringent) (NNS limits))
(PP (IN on)
(NP (NP (DT the) (NN density))
(PP (IN of)
(NP (NP (JJ relic) (JJ magnetic) (NNS monopoles))
(PP (IN in)
(NP (DT the) (NN universe))))
(. .)))