Complex sentence: Landini was founded by "Giovanni Landini" and had just started making tractors in 1925 when "Giovanni Landini" died preventing the completion of the first prototype Landini trator.
Split into simpler sentences: Landini was founded by "Giovanni Landini". Landini had just started making Tractors in 1925 when "Giovanni Landini" died preventing the completion of the first prototype Landini trator.