Question for the week

There are 3 suspectsof people selling oil. The first one is Bill,who is1.5m tall, the second one is John, who is 1.6m, and a final one is Kim, who is 1.7m. A great detective found out who it is and it is one of the 3 suspects. However, before he can tell anyone,he was killed.The detective's son found a clue written by the detective before he was dead. The clue is:710 57735 34. 5508 51 7718.The detective did not wrote the name of the suspect. The detective's son could not solve it. But can you?