Favored by the Ancient Egyptians as a source of turquoise, the Sinai was, until recently, famed for only one event but certainly an important one.
( ( Favored ( by ( ( the ( Ancient Egyptians ) ) ( as ( ( a source ) ( of turquoise ) ) ) ) ) ) ( , ( ( the Sinai ) ( ( ( was ( ( , ( ( until recently ) , ) ) famed ) ) ( for ( ( ( only ( one event ) ) ( but certainly ) ) ( an ( important one ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (VBG Favored) (PP (IN by) (NP (NP (DT the) (JJ Ancient) (NN Egyptians)) (PP (IN as) (NP (NP (DT a) (NN source)) (PP (IN of) (NP (NN turquoise))))))))) (, ,) (NP (DT the) (NNP Sinai)) (VP (VBD was) (ADJP (PRN (, ,) (SBAR (IN until) (FRAG (ADVP (RB recently)))) (, ,)) (JJ famed)) (PP (IN for) (NP (NP (RB only) (CD one) (NN event)) (CONJP (CC but) (RB certainly)) (NP (DT an) (JJ important) (NN one))))) (. .)))
The Sinai was a source of gold for the Ancient Egyptians.  
( ( The Sinai ) ( ( was ( ( a source ) ( of ( gold ( for ( the ( Ancient Egyptians ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Sinai)) (VP (VBD was) (NP (NP (DT a) (NN source)) (PP (IN of) (NP (NP (NN gold)) (PP (IN for) (NP (DT the) (JJ Ancient) (NN Egyptians))))))) (. .)))