Table:
0
A
B
C
D
E
1
Player
Height
Position
Year born
Current Club
2
Theodoros Papaloukas
2.00
Guard
1977
CSKA Moscow
3
Ioannis Bourousis
2.13
Center
1983
Olympiacos
4
Nikolaos Zisis
1.95
Guard
1983
CSKA Moscow
5
Vasileios Spanoulis
1.92
Guard
1982
Panathinaikos
6
Panagiotis Vasilopoulos
2.01
Forward
1984
Olympiacos
7
Michalis Pelekanos
1.98
Forward
1981
Real Madrid
8
Nikolaos Chatzivrettas
1.95
Guard
1977
Panathinaikos
9
Dimosthenis Dikoudis
2.06
Forward
1977
Panathinaikos
10
Konstantinos Tsartsaris
2.09
Center
1979
Panathinaikos
11
Dimitris Diamantidis
1.96
Guard
1980
Panathinaikos
12
Lazaros Papadopoulos
2.10
Center
1980
Real Madrid
13
Michail Kakiouzis
2.07
Forward
1976
CB Sevilla

Questions and formulas:
Question: Who is the Player born in 1981?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1=1981),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E13,D2:D13=1981),1))
Level: medium
Question: What is the Height that has a year born before 1977
Formula: SUM(FILTER(B1, D1<1977))
Formula2: SUM(FILTER(B2:B13, D2:D13<1977))
Level: easy