Complex sentence: In 2007, a Chinese-Italian consortium started to plan the construction of a prototype of an archimedes bridge in the lake, spanning 100 m, as a proof-of-concept for larger bridges.
Split into simpler sentences: In 2007, a Chinese-Italian consortium began planning the construction of a prototype of an archimedes bridge across the lake. The bridge is expected to span 100 meters, as a proof-of-concept for larger bridges.