(1) there is a table

SENTENCE_NT'there is a table'
    VERB_NT'is' {verb 'be' 3p s act IS_TENSE +ve} {existential}
    DEFECTIVE_NOUN_NT'there'
    COMMON_NOUN_NT'table' {indefinite 'a' n/m/f nom/acc s} {common nom/acc n s}

(2) some sailors are there

SENTENCE_NT'some sailors are there'
    VERB_NT'are' {verb 'be' s/p 2p act IS_TENSE +ve + 1p/3p p act IS_TENSE +ve}
    COMMON_NOUN_NT'sailors' {indefinite 'some' n/m/f nom/acc p} {common nom/acc m p}
    UNPARSED_NOUN_NT'there'

(3) there is a ming vase on the table

SENTENCE_NT'there is a ming vase on the table'
    VERB_NT'is' {verb 'be' 3p s act IS_TENSE +ve} {prep1: on} {existential}
    COMMON_NOUN_NT'ming vase' {indefinite 'a' n/m/f nom/acc s} {common nom/acc n s}
    RELATIONSHIP_NT'is' {meaning: carries}
        COMMON_NOUN_NT'table' {definite 'the' n/m/f s/p nom/acc} {common nom/acc n s}

(4) a ming vase is on the table

SENTENCE_NT'a ming vase is on the table'
    VERB_NT'is on' {verb 'be' 3p s act IS_TENSE +ve} {prep1: on}
    COMMON_NOUN_NT'ming vase' {indefinite 'a' n/m/f nom/acc s} {common nom/acc n s}
    RELATIONSHIP_NT'is on' {meaning: carries}
        COMMON_NOUN_NT'table' {definite 'the' n/m/f s/p nom/acc} {common nom/acc n s}