Table:
text: List of tallest buildings in Slovenia
Tallest proposed
Tallest proposed
Rank_ Name_ Location_ Height_feet_metres Floors Year_Proposed
1 Dravska vrata Maribor 112 m N/A N/A
2 Emonika Ljubljana 107 m N/A 27
3 Kolizej Centre Ljubljana 75 m 18 2010
4 Severna mestna vrata Ljubljana 2 x 72 m 22 2010
5 Hotel Plaza, Ljubljana Ljubljana 60 m 15 2010

Question: List of tallest buildings in Slovenia, which building stands in Ljubljana, was proposed in 2010 and has 15 floors?