This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.

Passage: The Raiders started well in Tennessee, taking a 13-6 lead at halftime over the Titans on a touchdown pass from Carr to Crabtree. The Raiders jumped out early in the third quarter on touchdown pass to Roberts. However, the Titans rallied scoring 15 points on two Marcus Mariota touchdown passes. Oakland drove late in the game looking for the winning score and appeared to have been stopped on an incomplete pass in the end zone on fourth down. However, the Titans were called for holding and Carr hit Roberts for the game-clinching touchdown two play later. The Raiders halted their three-game losing streak and moved to 5-6 on the season. 
Question: How many were both teams total points at halftime? 
Answer type: Number 
19.