Table:
text: 1986–87 Segunda División
First phase
First phase
Position_ Club Played Points Wins Draws Losses Goals_for Goals_against Goal_Difference
1 Valencia CF 34 46+12 19 8 7 53 26 +27
2 Deportivo de La Coruña 34 43+9 16 11 7 46 33 +13
3 CD Logroñés 34 41+7 16 9 9 46 33 +13
4 Celta de Vigo 34 40+6 17 6 11 56 35 +21
5 Recreativo de Huelva 34 39+5 18 3 13 53 44 +9
6 Sestao 34 38+4 13 12 9 38 23 +15
7 Elche CF 34 36+2 12 12 10 31 28 +3
8 Rayo Vallecano 34 35+1 10 15 9 28 28 0

Question: What highest goals against had wins of 19 and a goals for greater than 53 in the first phase of the 1986–87 Segunda División?

Question: Which number played in the first period had goal difference more than 0 when club Valencia CF was in Segunda División 1986–87?