[
{
"destination" : "incline_timeline",
"source" : [ "incline_tweet", "incline_follow" ],
"pk_columns" : {
"incline_follow.follower" : "user_id",
"incline_tweet.id" : "tweet_id"
},
"merge" : {
"incline_tweet.user_id" : "incline_follow.followee"
}
}
]