diff --git a/pdf/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pdf b/pdf/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pdf
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diff --git a/presentation_powerpoint/meeting_2nd/.~lock.mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx# b/presentation_powerpoint/meeting_2nd/.~lock.mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx#
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--- /dev/null
+++ b/presentation_powerpoint/meeting_2nd/.~lock.mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx#
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/video/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.mp4 b/video/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.mp4
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