Add smaller sample in db_init_sample
EntityType
lamp
power,brightness
name,position_x,position_y


EntityType
grouping node
activity
name,position_x,position_y


Entity
2,,asfaltowa,52.2059564,21.00775838

Entity
1,1,asfaltowa 1,52.20727794,21.00684643

Entity
1,1,asfaltowa 2,52.20714644,21.00697517

Entity
1,1,asfaltowa 3,52.2070544,21.00697517

Entity
1,1,asfaltowa 4,52.2069492,21.00701809