Complex sentence: The contract of lease with Germany, and supervised by the United Kingdom, was signed on February 14,1929 and will end in 2028, since 1993 the Czech Republic holds the former Czechoslovak legal position.
Split into simpler sentences: The contract of lease with Germany, and supervised by the United Kingdom, was signed on February 14,1929 and will end in 2028. Since 1993 the Czech Republic holds the former Czechoslovak legal position.