Complex sentence: The city was mentioned first as "pontem sarasinam" (1137) and "ponte sarracino" (1303), some historicans translate it as "saracens-brigde" and see a disputed relation to the Arab invasion into Switzerland during the 10th century.
Split into simpler sentences: The city was first mentioned as "pontem sarasinam" (1137) and "ponte sarracino" (1303). Some historicans translate it as "Saracen bridge" and see in it a reference to the Arab invasion of Switzerland during the 10th century.