( ( Figure ( 2.1 Property ) ) ( ( ( Sheets ( The ( new flexibility ) ) ) ( that ( ( the Star ) ( provided ( by ( ( allowing users ) ( to ( ( ( manipulate objects ) directly ) ( on ( ( the screen ) ( ( required ( its designers ) ) ( to ( ( invent ( ways ( for users ) ) ) ( to ( ( ( examine and ) modify ) ( ( the properties ) ( of ( those objects ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Figure) (CD 2.1) (NNP Property)) (VP (VBZ Sheets) (NP (DT The) (JJ new) (NN flexibility)) (SBAR (IN that) (S (NP (DT the) (NNP Star)) (VP (VBD provided) (PP (IN by) (S (VP (VBG allowing) (NP (NNS users)) (S (VP (TO to) (VP (VB manipulate) (NP (NNS objects)) (ADVP (RB directly)) (PP (IN on) (NP (NP (DT the) (NN screen)) (VP (VBN required) (NP (PRP$ its) (NNS designers)) (S (VP (TO to) (VP (VB invent) (NP (NP (NNS ways)) (PP (IN for) (NP (NNS users)))) (S (VP (TO to) (VP (VB examine) (CC and) (VB modify) (NP (NP (DT the) (NNS properties)) (PP (IN of) (NP (DT those) (NNS objects))))))))))))))))))))))) (. .)))
Figure 2.1 Property Sheets The new flexibility that the Star provided by allowing users to manipulate objects directly on the screen required its designers to invent ways for users to examine and modify the properties of those objects.
(ROOT (S (NP (NP (DT The) (NN flexibility)) (PP (IN of) (NP (DT an) (NN object)))) (VP (VBZ allows) (S (NP (PRP it)) (VP (TO to) (VP (VB bend))))) (. .)))
The flexibility of an object allows it to bend.