Hi,

Welcome to OSM.

The relation 15740081, landuse=religious, ... does not make sense... 

It has 2 ways .. both with the role 'inner' meaning they are inside an 'outer' and are excluded from the 'landuse=religious'... 
What I have done -
On the outside way place the tags landuse=religious, religion=sikh and then deleted 3 relations ... all of them related to this area and its landuse. Ths keeps things simple. 

I did retag the building as a church... but it might be better as a temple???

Use the OSM wiki to help in understanding things ... e.g. https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dplace_of_worship