JanusGraph Basic Usage tutorial

# Tutorial
# https://docs.janusgraph.org/getting-started/basic-usage/#cohabitors-of-tartarus
gremlin> // pluto can't be his own cohabitant
gremlin> g.V(pluto).out('lives').in('lives').where(is(neq(pluto))).values('name')
==>cerberus

# My result
gremlin> g.V(pluto).out('lives').in('lives').where(is(neq(pluto))).values('name')
==>pluto

gremlin> g.V(pluto).as('x').out('lives').in('lives').where(neq('x')).values('name')
==>cerberus