Detailed Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Q: Passage: On 15 February 1946, Laskov immigrated to Brno, Czechoslovakia, where he studied medicine at the Masaryk University and played for SK Zidenice, the modern 1. FC Brno. In 1947, he moved to Bratislava, where he married a Slovak beautician and was granted Czechoslovak citizenship. In Bratislava, he played for SK Slovan Bratislava between 1947 and 1952, winning the Czechoslovak First League in 1949, 1950 and 1951. In Czechoslovakia, he has also played for FK Inter Bratislava (then Cervena Hviezda) and TTS Trencin players, until 1960. In the Czechoslovak Championship, he played a total of 169 games, of which 98 (with 48 league goals) for Slovan; he also featured in 3 games for the Czechoslovakia national football team. He was awarded several fair play prizes in Czechoslovakia. Later on, he worked as a manager, managing FK Inter Bratislava, FC Spartak Trnava and Trencin. He also served as a professional physician specialized in otolaryngology and was an active member of the Bulgarian association in Slovakia.
Link Information: Founded as 1. CsSK Bratislava in 1919 Question: How long had SK Slovan Bratislava been a team when Laskov joined them?
A:
Answer: 28