BUR #9739 has been approved by @evazion.
create alias silent_hill -> silent_hill_(series)
create implication silent_hill_1 -> silent_hill_(series)
create implication silent_hill_2 -> silent_hill_(series)
create implication silent_hill_3 -> silent_hill_(series)
create implication silent_hill_4 -> silent_hill_(series)
create implication silent_hill:_homecoming -> silent_hill_(series)
create implication silent_hill:_origins -> silent_hill_(series)
create implication silent_hill:_downpour -> silent_hill_(series)
create implication silent_hill:_shattered_memories -> silent_hill_(series)
create implication silent_hills -> silent_hill_(series)
create implication silent_hill_(movie) -> silent_hill_(series)
Also included is a _(series) qualifier alias for good measure.