qiana.trig

# --------------
# Qiana examples
# --------------
#
# See https://github.com/dig-team/Qiana

@prefix graph: <http://www.w3.org/2000/10/swap/graph#>.
@prefix log: <http://www.w3.org/2000/10/swap/log#>.
@prefix var: <http://www.w3.org/2000/10/swap/var#>.
@prefix : <http://example.org/#>.

# forall phi, x: says(Einstein, phi) => believes(x, phi)
_:bng_1 log:isImpliedBy _:bng_2.

_:bng_1 {
    var:x :believes var:phi.
}

_:bng_2 {
    :Einstein :says var:phi.
}

# forall phi: says(Einstein, phi) => phi
_:bng_3 log:implies var:phi.

_:bng_3 {
    :Einstein :says var:phi.
}

# says(Einstein, not (forall x: glitters(x) => gold(x)))
:Einstein :says _:bng_5.

_:bng_5 {
    _:bng_6 log:implies _:bng_7.
}

_:bng_6 {
    var:x a :glitter.
}

_:bng_7 {
    var:x :notNecessarilyA :gold.
}

# example
:northStar a :glitter.

# query
_:bng_8 log:query _:bng_8.

_:bng_8 {
    :Fabian :believes var:what.
    var:what graph:statement var:content.
}

_:bng_9 log:query _:bng_9.

_:bng_9 {
    var:x :notNecessarilyA var:what.
}