CREATE TABLE table_name_50 (score VARCHAR, opponent_in_final VARCHAR, outcome VARCHAR, partnering VARCHAR)

What is Score, when Outcome is 'winner', when Partnering is 'Nicole Sewell', and when Opponent in Final is 'Victoria Davies / Kate Warne-Holland'?
SELECT score FROM table_name_50 WHERE outcome = "winner" AND partnering = "nicole sewell" AND opponent_in_final = "victoria davies / kate warne-holland"
SELECT "score" FROM "table_name_50" WHERE "nicole sewell" = "partnering" AND "opponent_in_final" = "victoria davies / kate warne-holland" AND "outcome" = "winner"