( ( So ( for ( example ( if ( ( ( a ( beryllium atom ) ) ( -LRB- ( ( ( atomic number ) 4 ) -RRB- ) ) ) ( went ( through ( alpha decay ) ) ) ) ) ) ) ) ( it ( ( would ( become ( helium ( -LRB- ( ( ( atomic number ) 2 ) -RRB- ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (IN So) (PP (IN for) (NP (NP (NN example)) (SBAR (IN if) (S (NP (NP (DT a) (NN beryllium) (NN atom)) (PRN (-LRB- -LRB-) (NP (NP (JJ atomic) (NN number)) (NP (CD 4))) (-RRB- -RRB-))) (VP (VBD went) (PP (IN through) (NP (JJ alpha) (NN decay))))))))) (NP (PRP it)) (VP (MD would) (VP (VB become) (NP (NP (NNP helium)) (PRN (-LRB- -LRB-) (NP (NP (JJ atomic) (NN number)) (NP (CD 2))) (-RRB- -RRB-))))) (. .)))
So for example if a beryllium atom (atomic number 4) went through alpha decay it would become helium (atomic number 2).
(ROOT (S (NP (NP (DT The) (JJ low) (JJ atomic) (NN number)) (PP (IN of) (NP (NN beryllium)))) (VP (VBZ allows) (S (NP (PRP it)) (VP (TO to) (VP (VB absorb) (NP (NNPS x-rays)))))) (. .)))