#open database pgraph2;
#query meminit (1524);
#query p2 loadgraph;

# Queries the conferences and publication titles
# where "Ralf Hartmut Gueting" presenets a paper that is
# indexed with a keyword containing "tempo"

# The starting nodes for the subgraph match are taken from the
# tuple stream (first argument).
# Note the direction argument "<-" to match an edge in reverse direction.

query p2
    Document feed 
match1 
['
(  
   (doc Document)
   p PUBLISHED_AT
   ( (conf Conference) )
   KEYWORD_OF <-
   ( (k Keyword) )
   AUTHOR_OF <-
   ( (a Author  ( (Name "Ralf Hartmut Gueting")) ) )
)',
'( ((k Word) contains "tempo")  )',
'( ((conf Name) Name)  ((p Year) Year)  ((doc Title) Title) )'
]  consume;