user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: what gameplay mode is used in the video game that supports accelerometers? 
Knowledge Triplets: LG Optimus Black, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Accelerometer, computer.computer_peripheral.supporting_games, Zombie Ball
Samsung Replenish, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
accelerometer.noun.01, base.wordnet.synset.equivalent_topic, Accelerometer
davewiner, base.yupgrade.user.topics, Accelerometer
LG Optimus Zip, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
LG Optimus Chat, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Accelerometer, measurement_unit.measuring_instrument.subclasses, Piezoelectric accelerometer
Touchscreen, computer.computer_peripheral.supporting_games, Zombie Ball
Zombie Ball, cvg.computer_videogame.peripherals_supported, Accelerometer
HTC Titan, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Zombie apocalypse, cvg.computer_game_subject.games, Zombie Ball
HTC Magic, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC 7 Trophy, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Accelerometer, measurement_unit.measuring_instrument.dimension_measured, Proper acceleration
Survival, cvg.gameplay_mode.games_with_this_mode, Zombie Ball
Samsung Galaxy S II, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Gravitational field, measurement_unit.dimension.instruments, Gravimeter
HTC 7 Surround, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Zombie Ball, cvg.computer_videogame.release_date, 2011-05-26
Pro Evolution Soccer 2012, cvg.computer_videogame.platforms, Xperia Play
Single-player video game, cvg.gameplay_mode.games_with_this_mode, Zombie Ball
LG Quantum, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Nexus One, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
m.06h_8hr, base.yupgrade.user.topics, Accelerometer
Nokia X6, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Cyril Moutran, base.yupgrade.user.topics, Accelerometer
Samsung Galaxy Note, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Samsung Galaxy Ace, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
ZTE Tania, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Hero, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Sony Ericsson W580i, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Zombie Ball, cvg.computer_videogame.designers, Nenad Kajgana
m.07vn7ph, base.yupgrade.user.topics, Accelerometer
Sony Ericsson Xperia neo, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
m.09rnw3p, dataworld.gardening_hint.replaced_by, Accelerometer
T-Mobile myTouch 3G Slide, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Sony Ericsson W910i, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Sony Ericsson Z750, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Desire S, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Droid X, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Integrated electronic piezoelectric accelerometer, measurement_unit.measuring_instrument.subclass_of, Accelerometer
HTC 7 Mozart, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
m.0xp7pb0, type.object.permission, m.019h
HTC Wildfire S, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
PIGA accelerometer, measurement_unit.measuring_instrument.subclass_of, Accelerometer
Zombie Ball, cvg.computer_videogame.peripherals_supported, Touchscreen
Sony Ericsson Xperia X8, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Arcade mode, cvg.gameplay_mode.games_with_this_mode, Zombie Ball
Zombie Ball, cvg.computer_videogame.gameplay_modes, Arcade mode
Sony Ericsson W595, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
m.06wft1x, base.yupgrade.user.topics, Accelerometer
HTC HD7, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Dream, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Nokia C6-00, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Sony Ericsson Xperia pro, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Samsung Focus, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Samsung Focus S, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Fujitsu Toshiba IS12T, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
T-Mobile myTouch 4G, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Zombie, cvg.cvg_genre.games, Zombie Ball
Piezoelectric accelerometer, measurement_unit.measuring_instrument.subclass_of, Accelerometer
Samsung Galaxy S4, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Zombie Ball, cvg.computer_videogame.processors_supported, ARM architecture
Sony Ericsson Xperia mini, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC HD2, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Nexus S, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
BlackBerry Storm, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Sony Ericsson Xperia X10, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Evo 4G, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Zombie Ball, cvg.computer_videogame.gameplay_modes, Single-player video game
Sony Ericsson Xperia arc S, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Desire, base.gadgets.gadget.successor, HTC Desire S
LG Optimus Chic, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Ivan Vučica, cvg.cvg_developer.games_developed, Zombie Ball
Palm Pixi, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Desire S, base.gadgets.gadget.screen, m.0j7b007
Zombie Ball, cvg.computer_videogame.developer, Ivan Vučica
Accelerometer, measurement_unit.measuring_instrument.subclasses, Laser accelerometer
Laser accelerometer, measurement_unit.measuring_instrument.subclass_of, Accelerometer
Accelerometer, measurement_unit.measuring_instrument.subclasses, Gravimeter
Zombie Ball, cvg.computer_videogame.subjects, Zombie apocalypse
Nokia N97, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
LG Optimus 2X, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Desire HD, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Zombie Ball, cvg.computer_videogame.gameplay_modes, Survival
Ana Marie Cox, base.yupgrade.user.topics, Accelerometer
Nokia 5800 XpressMusic, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Touch Diamond, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Sony Ericsson Xperia arc, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Inspire 4G, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Samsung Omnia 7, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Accelerometer, measurement_unit.measuring_instrument.subclasses, PIGA accelerometer
Xperia Play, cvg.cvg_platform.games, Pro Evolution Soccer 2012
BlackBerry Bold, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Evo Shift 4G, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Aria, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Radar, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Palm Pre, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Zombie Ball, cvg.computer_videogame.cvg_genre, Zombie
Xperia Play, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Samsung Omnia W, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Nokia C5-03, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Proper acceleration, measurement_unit.dimension.instruments, Accelerometer
Gravimeter, measurement_unit.measuring_instrument.subclass_of, Accelerometer
HTC Desire, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Droid Incredible, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Nokia X3-00, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Desire, base.gadgets.gadget.successor, HTC Desire HD
LG Optimus One, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
LG Optimus 7, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Nokia X5, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Nokia 5250, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Titan II, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Dell Venue Pro, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Nokia 5230, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Huawei U8800, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Accelerometer, measurement_unit.measuring_instrument.subclasses, Integrated electronic piezoelectric accelerometer
Palm Pre 2, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
BlackBerry Bold 9900, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
HTC Desire Z, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
m.019h, type.permission.controls, m.0xp7pb0
Samsung Galaxy Note, base.gadgets.gadget.screen, m.0k5j094
Nokia X7-00, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Sony Ericsson W760, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Zombie Ball, cvg.gameplay_mode.games_with_this_mode, Survival
Acer Allegro, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
Accelerometer, user.avh.default_domain.ellerdale_topic.ellerdale_id, 009b-6cb6
m.07vn9v7, base.yupgrade.user.topics, Accelerometer
Accelerometer, base.schemastaging.context_name.pronunciation, g.125_p7dgj
LG Optimus, user.robert.mobile_phones.mobile_phone.input_interface, Accelerometer
m.0xp7pb0, dataworld.gardening_hint.last_referenced_by, Accelerometer

Answer: Single-player video game
Arcade mode
Survival