[bug] ros_typedb returning empty result for valid query

[Rezenders]

The following query should return x=4 and y=0

ros2 service call /ros_typedb/query ros_typedb_msgs/srv/Query "{query_type: 'fetch', query: 'match
\$o isa object, has object-name \"cup\";
(object:\$o, room:\$r) isa delivery-location;
\$rg isa room, has room-name \"garage\";
\$path (room:\$rg, room:\$r) isa path;
\$pose (physical_thing:\$r) isa pose2d;
fetch
\$pose:x, y, theta;'}"
requester: making request: ros_typedb_msgs.srv.Query_Request(query_type='fetch', query='match $o isa object, has object-name "cup"; (object:$o, room:$r) isa delivery-location; $rg isa room, has room-name "garage"; $path (room:$rg, room:$r) isa path; $pose (physical_thing:$r) isa pose2d; fetch $pose:x, y, theta;')

response:
ros_typedb_msgs.srv.Query_Response(success=True, results=[ros_typedb_msgs.msg.QueryResult(attributes=[ros_typedb_msgs.msg.Attribute(name='pose', label='pose2d', value=rcl_interfaces.msg.ParameterValue(type=0, bool_value=False, integer_value=0, double_value=0.0, string_value='', byte_array_value=[], bool_array_value=[], integer_array_value=[], double_array_value=[], string_array_value=[]))])])